/*
 * === AI STUDY ASSISTANT - STYLES ===
 * All styles for the application.
 */

/*
 * --- GLOBAL CSS VARIABLES ---
 */
:root {
  /* Dark Theme (Neon/Cyberpunk) */
  --primary-accent: #00aaff; /* Neon Blue */
  --secondary-accent: #d400ff; /* Neon Purple */
  --background-primary: #0a0f1e; /* Deep Dark Background */
  --background-secondary: #1d1135; /* Sidebar/Bot Bubble Background */
  --background-tertiary: #050210; /* Darkest element background */
  --user-bubble-bg: #3a3f4b; /* User message bubble */
  
  --text-color: white;
  --text-color-light: #ccc;
  --border-color: #333;
  --input-bg: rgba(0,0,0,0.3);
  --shadow-color: rgba(0, 170, 255, 0.3);
  
  --danger-red: #ff4757;
  --success-green: #2ecc71;
  --icon-color: #888;
  
  /* Z-Index Hierarchy */
  --z-tooltip: 10;
  --z-header: 100;
  --z-history-btn: 101;
  --z-modal: 1000;
  --z-mobile-backdrop: 1050;
}

body.light-theme {
  /* Light Theme (Professional/Soft Material) */
  --primary-accent: #007bff; /* Primary Blue */
  --secondary-accent: #6f42c1; /* Secondary Purple */
  --background-primary: #f8f9fa; /* Very Light Gray */
  --background-secondary: #e9ecef; /* Sidebar/Lightest Background */
  --background-tertiary: #ffffff; /* Modal/Input Background */
  --user-bubble-bg: #d1e7fd; /* Soft Blue User Message */
  
  --text-color: #212529; /* Dark text */
  --text-color-light: #555; /* Muted text */
  --border-color: #ced4da; /* Light Gray Border */
  --input-bg: #ffffff;
  --shadow-color: rgba(0, 123, 255, 0.2);
  
  --danger-red: #dc3545;
  --success-green: #28a745;
  --icon-color: #555;
}


/* Base Body Styles */
html {
  height: 100%;
  overflow-x: hidden; /* Prevent horizontal scroll */
}
body {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  display: flex;
  min-height: 100dvh; /* Use dynamic viewport height */
  background: var(--background-primary);
  color: var(--text-color);
  box-sizing: border-box;
  overflow-x: hidden; /* Prevent horizontal scroll */
  height: 100dvh; /* Use dynamic viewport height */
  transition: background 0.4s ease, color 0.4s ease;
}

.main-container {
    display: flex;
    width: 100%;
    height: 100%;
    transition: all 0.4s ease;
}

.chat-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: 20px;
    box-sizing: border-box;
    height: 100dvh; /* Use dynamic viewport height */
}

/* Tooltip for Clear Chat */
#clearChatBtn::after {
  content: 'Clear Chat';
  position: absolute;
  top: -35px; /* shows above */
  left: 50%;
  transform: translateX(-50%);
  background: rgba(40,40,40,0.9);
  color: white;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
  z-index: 10;
}
body.light-theme #clearChatBtn::after {
    background: white;
    color: var(--text-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
#clearChatBtn:hover::after {
  opacity: 1;
  transform: translate(-50%, -5px);
}

@media (max-width: 768px) {
    #clearChatBtn {
        top: 100px; /* Below mobile header */
        right: 15px;
    }
}

/* --- Header & Credits --- */
.site-header {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Credits are now in the sidebar */
.credits {
  display: none;
}

/* Hide old greeting btn from header */
.site-header #userGreeting.user-greeting-btn {
  display: none !important; /* Always hide from header */
}

/* --- User Greeting Button Style --- */
.user-greeting-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  outline: inherit;
  display: none; /* Hidden by default */
  align-self: center;
  margin-right: 15px;
  color: var(--primary-accent);
  text-shadow: 0 0 5px var(--shadow-color);
  transition: all 0.2s;
  font-size: 1rem;
  white-space: nowrap;
}
.user-greeting-btn:hover {
  text-shadow: 0 0 10px var(--primary-accent), 0 0 15px var(--primary-accent);
  transform: scale(1.05);
}
body.light-theme .user-greeting-btn {
    text-shadow: none;
    font-weight: 500;
}
body.light-theme .user-greeting-btn:hover {
    transform: scale(1.05);
    color: #0056b3;
}


.header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
}

#openHistoryBtn {
  margin-right: 10px;
}

#showLoginBtn, #showSignupBtn, #logoutBtn, #historyBtn, #openHistoryBtn, #closeHistoryBtn, #newChatBtn, #headerFeedbackBtn {
  padding: 10px 20px;
  border: 1px solid var(--primary-accent);
  background: var(--background-tertiary); 
  color: var(--primary-accent);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s, transform 0.2s;
  font-family: 'Poppins', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  text-shadow: 0 0 5px var(--shadow-color);
  white-space: nowrap;
}
body:not(.light-theme) #showLoginBtn, body:not(.light-theme) #showSignupBtn, body:not(.light-theme) #logoutBtn, body:not(.light-theme) #historyBtn, body:not(.light-theme) #openHistoryBtn, body:not(.light-theme) #closeHistoryBtn, body:not(.light-theme) #newChatBtn, body:not(.light-theme) #headerFeedbackBtn {
    background: rgba(13, 17, 23, 0.5);
    backdrop-filter: blur(5px);
}
body.light-theme #showLoginBtn, body.light-theme #showSignupBtn, body.light-theme #logoutBtn, body.light-theme #historyBtn, body.light-theme #openHistoryBtn, body.light-theme #closeHistoryBtn, body.light-theme #newChatBtn, body.light-theme #headerFeedbackBtn {
    background: var(--background-tertiary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-shadow: none;
}

#historyBtn {
    display: none;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 101;
    padding: 8px 15px;
}

#logoutBtn, #headerFeedbackBtn {
    display: none;
}

#showLoginBtn:hover, #showSignupBtn:hover, #logoutBtn:hover, #historyBtn:hover, #openHistoryBtn:hover, #closeHistoryBtn:hover, #newChatBtn:hover, #headerFeedbackBtn:hover {
  background: var(--primary-accent);
  color: white;
  box-shadow: 0 0 20px var(--primary-accent);
  text-shadow: none;
  transform: scale(1.03);
}

/* --- Mode Selector Dropdown --- */
.mode-selector-container {
  position: relative;
  display: inline-block;
  margin-right: 10px;
}

#modeSelector {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding: 10px 35px 10px 15px;
  border: 1px solid var(--primary-accent);
  background: var(--background-tertiary);
  color: var(--text-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  font-family: 'Poppins', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  text-shadow: 0 0 5px var(--shadow-color);
  outline: none;
}

body:not(.light-theme) #modeSelector {
  background: rgba(13, 17, 23, 0.5);
  backdrop-filter: blur(5px);
}

body.light-theme #modeSelector {
  background: var(--background-tertiary);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  text-shadow: none;
  color: var(--text-color);
}

#modeSelector:hover {
  background: var(--primary-accent);
  color: white;
  box-shadow: 0 0 20px var(--primary-accent);
  text-shadow: none;
}

/* Custom dropdown arrow */
.mode-selector-container::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--primary-accent);
  pointer-events: none;
  transition: border-color 0.3s;
}

.mode-selector-container:hover::after {
  border-top-color: white;
}

#modeSelector option {
  background: var(--background-secondary);
  color: var(--text-color);
  padding: 10px;
  font-weight: 500;
}

body.light-theme #modeSelector option {
  background: var(--background-tertiary);
  color: var(--text-color);
}

/* Mode Selector Option Colors */
#modeSelector option[value="normal"] {
  color: #00aaff;
}
#modeSelector option[value="deep"] {
  color: #d400ff;
}
#modeSelector option[value="test"] {
  color: #ff4757;
}
#modeSelector option[value="chat"] {
  color: #2ecc71;
}

/* Light theme overrides for option colors */
body.light-theme #modeSelector option[value="normal"] {
  color: #007bff;
}
body.light-theme #modeSelector option[value="deep"] {
  color: #6f42c1;
}
body.light-theme #modeSelector option[value="test"] {
  color: #dc3545;
}
body.light-theme #modeSelector option[value="chat"] {
  color: #28a745;
}


/* --- Modals (Auth, Delete, Profile) --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 17, 23, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease-out;
}
body.light-theme .modal-overlay {
    background: rgba(200, 200, 200, 0.6);
}

#mobile-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1050;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}
#mobile-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}


.modal-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.form-container {
  perspective: 1000px;
  width: 90%;
  max-width: 400px;
  height: 480px; 
  position: relative;
}

.flipper {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.form-container.flipped .flipper {
  transform: rotateY(180deg);
}

.form-face, .delete-confirm-modal {
  position: absolute;
  width: 100%;
  height: 100%; 
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px;
  box-sizing: border-box;
  background: var(--background-secondary);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 1px solid var(--primary-accent);
  box-shadow: 0 0 25px var(--shadow-color), 0 0 40px rgba(212, 0, 255, 0.2);
}
body.light-theme .form-face, body.light-theme .delete-confirm-modal {
    background: var(--background-tertiary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border-color: var(--border-color);
    backdrop-filter: none;
}
.delete-confirm-modal {
    height: auto;
    max-width: 400px;
    padding: 40px;
}

.delete-confirm-modal h4 { margin: 0 0 10px; font-size: 1.2rem; }
.delete-confirm-modal p { margin: 0 0 25px; color: var(--text-color-light); }
.delete-confirm-modal .modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.modal-btn { padding: 8px 16px; border-radius: 6px; cursor: pointer; border: 1px solid; font-weight: 500; transition: all 0.2s, transform 0.2s; }

#confirmDeleteBtn, #confirmDeleteMessageBtn { background: var(--danger-red); border-color: var(--danger-red); color: white; }
#confirmDeleteBtn:hover, #confirmDeleteMessageBtn:hover { background: #ff2d41; transform: scale(1.05); }

#cancelDeleteBtn, #cancelDeleteMessageBtn { background: transparent; border-color: #555; color: var(--text-color-light); }
body.light-theme #cancelDeleteBtn, body.light-theme #cancelDeleteMessageBtn { border-color: var(--border-color); }
#cancelDeleteBtn:hover, #cancelDeleteMessageBtn:hover { background: #555; color: white; transform: scale(1.05); }
body.light-theme #cancelDeleteBtn:hover, body.light-theme #cancelDeleteMessageBtn:hover { background: #e0e0e0; color: var(--text-color); }

.login-form, .signup-form { height: 100%; }
.login-form { transform: rotateY(0deg); }
.signup-form { transform: rotateY(180deg); }

.form-face h2 {
  font-family: 'Audiowide', sans-serif;
  font-size: 2.5rem;
  text-align: center;
  margin: 0 0 30px 0;
  background: linear-gradient(90deg, var(--secondary-accent), var(--primary-accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-pan 8s linear infinite;
  background-size: 200% auto;
}

.input-group { 
    margin-bottom: 20px; 
    position: relative;
    display: block; 
}
.input-group input,
#feedbackText {
  width: 100%;
  padding: 12px 40px 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  outline: none;
  background: var(--input-bg);
  color: var(--text-color);
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s, color 0.3s;
  box-sizing: border-box;
}
/* Non-password inputs */
.input-group input[type="email"], 
.input-group input[type="text"],
#feedbackText {
    padding: 12px 15px;
}

#feedbackText {
    resize: vertical;
    min-height: 100px;
}

.password-toggle-icon {
    position: absolute;
    top: 50%;
    right: 12px;
    transform: translateY(-50%);
    color: var(--icon-color);
    cursor: pointer;
    transition: color 0.2s;
}
.password-toggle-icon:hover {
    color: var(--primary-accent);
}
.password-toggle-icon svg {
    width: 20px;
    height: 20px;
    display: block;
}

.input-group input:focus,
#feedbackText:focus { 
    border-color: var(--primary-accent); 
    box-shadow: 0 0 10px var(--shadow-color); 
}
.input-group input::placeholder,
#feedbackText::placeholder { color: var(--text-color-light); opacity: 0.6; }

.error-message {
  color: var(--danger-red);
  text-align: center;
  font-size: 0.9rem;
  margin-top: 5px;
  margin-bottom: 10px;
  min-height: 1.2em;
  height: auto;
}

.success-message {
  color: var(--success-green);
  text-align: center;
  font-size: 0.9rem;
  margin-top: 10px;
  margin-bottom: 10px;
  min-height: 1.2em;
  height: auto;
}

/* Email Sign up button - Primary Action Button */
.form-btn {
    display: block;
    width: 100%;
    padding: 12px 20px;
    margin-top: 10px;
    border: 1px solid var(--primary-accent);
    background: transparent;
    color: var(--primary-accent);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s, transform 0.2s;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    text-shadow: 0 0 5px var(--shadow-color);
}
body.light-theme .form-btn {
    background: var(--primary-accent);
    color: white;
    text-shadow: none;
    border-color: var(--primary-accent);
    box-shadow: 0 2px 5px rgba(0, 123, 255, 0.2);
}
body.light-theme .form-btn:hover {
    background: #0056b3;
    box-shadow: 0 0 20px #0056b3;
}

.form-btn:hover { 
  background: var(--primary-accent); 
  color: white; 
  box-shadow: 0 0 20px var(--primary-accent); 
  text-shadow: none; 
  transform: scale(1.03);
}
.form-btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    transform: scale(1);
    background: transparent !important;
    box-shadow: none !important;
    color: var(--primary-accent) !important;
}
body.light-theme .form-btn:disabled {
    background: var(--primary-accent) !important;
    color: white !important;
    box-shadow: none !important;
    opacity: 0.6;
}

/* Style for the separator */
.separator {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 15px 0;
    color: var(--text-color-light);
}
.separator::before,
.separator::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}
.separator:not(:empty)::before {
    margin-right: .5em;
}
.separator:not(:empty)::after {
    margin-left: .5em;
}

.toggle-link { 
    display: block; 
    text-align: center; 
    margin-top: 20px;
    color: var(--text-color-light); 
    font-size: 1.0rem;
}
.toggle-link a { 
    color: var(--primary-accent); 
    text-decoration: none; 
    font-weight: 500; 
    cursor: pointer; 
    transition: text-shadow 0.3s; 
}
.toggle-link a:hover { 
    text-shadow: 0 0 8px var(--shadow-color); 
}
body.light-theme .toggle-link a:hover {
    text-shadow: none;
    color: #0056b3;
}

/* --- Profile Modal Styles --- */
.profile-modal-content {
  position: relative;
  background: var(--background-secondary);
  border-radius: 20px;
  border: 1px solid var(--primary-accent);
  box-shadow: 0 0 25px var(--shadow-color), 0 0 40px rgba(212, 0, 255, 0.2);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 30px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}
body.light-theme .profile-modal-content {
  background: var(--background-tertiary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-color: var(--border-color);
}

.profile-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.profile-modal-header h2 {
  font-family: 'Audiowide', sans-serif;
  font-size: 2rem;
  margin: 0;
  background: linear-gradient(90deg, var(--secondary-accent), var(--primary-accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-pan 8s linear infinite;
  background-size: 200% auto;
}

#closeProfileModal {
  font-size: 2.5rem;
  color: var(--icon-color);
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  padding: 0;
  transition: color 0.2s, transform 0.2s;
}
#closeProfileModal:hover {
  color: var(--text-color);
  transform: rotate(90deg);
}

.profile-section {
  margin-bottom: 25px;
}
.profile-section label {
  display: block;
  font-weight: 500;
  color: var(--text-color-light);
  margin-bottom: 8px;
}
.profile-section input[type="email"] {
  background: var(--background-primary);
  cursor: not-allowed;
  opacity: 0.7;
}

.username-edit-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
#profileUsernameDisplay {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-color);
  flex-grow: 1;
}
#profileUsernameInput {
  display: none;
  flex-grow: 1;
}
.edit-btn {
  padding: 5px 10px;
  font-size: 0.8rem;
  background: none;
  border: 1px solid var(--icon-color);
  color: var(--icon-color);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.edit-btn:hover {
  border-color: var(--primary-accent);
  color: var(--primary-accent);
}
#saveUsernameBtn, #cancelEditUsernameBtn {
  display: none;
}
#saveUsernameBtn {
  border-color: var(--success-green);
  color: var(--success-green);
}
#cancelEditUsernameBtn {
  border-color: var(--danger-red);
  color: var(--danger-red);
}

#changePasswordForm .input-group {
  margin-bottom: 15px;
}

#profileFeedbackBtn {
    margin: 0 0 0 0;
}


/* --- Feedback Modal Styles --- */
.feedback-modal-content {
  position: relative;
  background: var(--background-secondary);
  border-radius: 20px;
  border: 1px solid var(--primary-accent);
  box-shadow: 0 0 25px var(--shadow-color), 0 0 40px rgba(212, 0, 255, 0.2);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 30px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;

  /* Animation */
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

#feedback-modal.visible .feedback-modal-content {
    opacity: 1;
    transform: translateY(0);
}

body.light-theme .feedback-modal-content {
  background: var(--background-tertiary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-color: var(--border-color);
}

/* Reuse profile header styles */
.feedback-modal-content .profile-modal-header {
  margin-bottom: 25px;
}
.feedback-modal-content .profile-modal-header h2 {
  font-size: 2rem;
}

#closeFeedbackModal,
#closeContactManagerModal,
#closeShareModal {
  font-size: 2.5rem;
  color: var(--icon-color);
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  padding: 0;
  transition: color 0.2s, transform 0.2s;
}
#closeFeedbackModal:hover,
#closeContactManagerModal:hover,
#closeShareModal:hover {
  color: var(--text-color);
  transform: rotate(90deg);
}

#feedbackForm label {
  display: block;
  font-weight: 500;
  color: var(--text-color-light);
  margin-bottom: 8px;
}

/* Rating Section */
.feedback-rating-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
    margin-bottom: 15px;
}
.rating-option {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}
.rating-option:hover {
    background: var(--input-bg);
    border-color: var(--primary-accent);
}
.rating-option.selected {
    background: var(--input-bg);
    border-color: var(--primary-accent);
    box-shadow: 0 0 10px var(--shadow-color);
}
.rating-box {
    width: 20px;
    height: 20px;
    border: 2px solid var(--icon-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--success-green);
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.rating-option.selected .rating-box {
    border-color: var(--success-green);
    box-shadow: 0 0 8px rgba(46, 204, 113, 0.5);
}
.rating-emoji {
    font-size: 1.2rem;
}
.rating-label {
    font-weight: 500;
    color: var(--text-color);
}
body.light-theme .rating-label {
    color: var(--text-color);
}

#feedbackError {
    text-align: left;
    margin-top: 10px;
}
#feedbackSuccess {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    margin-top: 10px;
}

#submitFeedbackBtn {
    margin-top: 15px;
}

/* --- Share Modal Styles --- */
.share-modal-content {
  position: relative;
  background: var(--background-secondary);
  border-radius: 20px;
  border: 1px solid var(--primary-accent);
  box-shadow: 0 0 25px var(--shadow-color), 0 0 40px rgba(212, 0, 255, 0.2);
  width: 90%;
  max-width: 500px;
  padding: 30px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}
body.light-theme .share-modal-content {
  background: var(--background-tertiary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-color: var(--border-color);
}
#share-modal .profile-modal-header h2 {
    font-size: 2rem;
}
.share-modal-content p {
    color: var(--text-color-light);
    margin: 0 0 20px 0;
    line-height: 1.6;
}
.share-link-container {
    display: flex;
    align-items: center;
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 5px;
    margin-bottom: 25px;
}
#shareLinkInput {
    flex-grow: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
    padding: 8px;
    font-size: 0.9rem;
}
#shareLinkInput:read-only {
    color: var(--text-color-light);
}
#copyShareLinkBtn {
    padding: 8px 12px;
    font-size: 0.9rem;
    flex-shrink: 0;
    border: 1px solid var(--primary-accent);
    background: transparent;
    color: var(--primary-accent);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s, transform 0.2s;
    font-weight: 500;
    text-shadow: 0 0 5px var(--shadow-color);
}
#copyShareLinkBtn:hover {
    background: var(--primary-accent);
    color: white;
    box-shadow: 0 0 10px var(--shadow-color);
    text-shadow: none;
}
#copyShareLinkBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
#unshareBtn {
    background: var(--danger-red);
    border-color: var(--danger-red);
    color: white;
}
#unshareBtn:hover {
    background: #ff2d41;
    box-shadow: 0 0 15px rgba(255, 71, 87, 0.5);
}


/* --- Main App Section --- */
.chat-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.chat-box {
  padding: 20px 15px;
  overflow-y: auto;
  font-size: 0.95rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  -webkit-overflow-scrolling: touch;
}

.chat-box-limiter {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.chat-box-inner {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* --- Scrollbar Styles --- */
.chat-box::-webkit-scrollbar {
  width: 10px;
}
.chat-box::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 10px;
}
.chat-box::-webkit-scrollbar-thumb {
  background: var(--primary-accent);
  border-radius: 10px;
}
body.light-theme .chat-box::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.05);
}
body.light-theme .chat-box::-webkit-scrollbar-thumb {
    background: var(--primary-accent);
}
.chat-box, #session-list {
  scrollbar-width: thin;
  scrollbar-color: var(--primary-accent) rgba(0, 0, 0, 0.1);
}
body.light-theme .chat-box, body.light-theme #session-list {
  scrollbar-color: var(--primary-accent) rgba(0, 0, 0, 0.05);
}

@keyframes slideInFromBottom {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.message-wrapper {
    animation: slideInFromBottom 0.3s ease-out;
}


.empty-chat-state {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    flex-grow: 1;
    color: var(--text-color-light);
    padding-bottom: 10vh;
}
.empty-chat-state h1 {
  font-family: 'Audiowide', sans-serif;
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 400;
  margin: 0;
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--secondary-accent), var(--primary-accent), #55ffb8, var(--secondary-accent));
  background-size: 250% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-pan 8s linear infinite;
}

.empty-chat-state h2 {
  font-size: clamp(1rem, 4vw, 1.5rem);
  font-weight: 400;
  margin-top: 10px;
  color: var(--text-color-light);
  text-shadow: 0 0 10px var(--shadow-color);
}
body.light-theme .empty-chat-state h2 {
    text-shadow: none;
    color: #777;
}

.user-message-wrapper { align-self: flex-end; }
.bot-message-wrapper { align-self: flex-start; }

.message { 
    position: relative; 
    padding: 12px 18px; 
    border-radius: 16px; 
    max-width: 85%; 
    word-wrap: break-word; 
    overflow-wrap: break-word;
    width: fit-content; 
    line-height: 1.6; 
}

.user-message {
    white-space: pre-wrap;
}

.bot-message {
    white-space: normal;
}

/* Dark Theme Bubbles */
body:not(.light-theme) .user-message { 
    background: var(--user-bubble-bg); 
    color: #eee; 
    border: 1px solid #555; 
    border-bottom-right-radius: 2px;
}
body:not(.light-theme) .bot-message { 
    background: linear-gradient(135deg, var(--background-secondary), #22173f);
    color: #f1f5f9; 
    border: 1px solid rgba(212, 0, 255, 0.4);
    box-shadow: 0 0 20px rgba(212, 0, 255, 0.15);
    border-bottom-left-radius: 2px;
}

/* Light Theme Bubbles */
body.light-theme .message.bot-message {
    background: #ffffff;
    color: #1e293b;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    border-bottom-left-radius: 2px;
}
body.light-theme .message.user-message {
    background: #e0f2fe;
    color: #0369a1;
    border: 1px solid #bae6fd;
    border-bottom-right-radius: 2px;
}

/* --- Markdown Content Typography --- */
.message-content {
    font-size: 0.95rem;
    line-height: 1.65;
    word-break: break-word;
}

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin: 16px 0 8px 0;
    font-weight: 600;
    line-height: 1.35;
    color: #ffffff;
}
.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child,
.message-content h4:first-child {
    margin-top: 0;
}
.message-content h1 { font-size: 1.35rem; }
.message-content h2 { font-size: 1.2rem; }
.message-content h3 { font-size: 1.05rem; color: #38bdf8; }
.message-content h4 { font-size: 0.98rem; }

body.light-theme .message-content h1,
body.light-theme .message-content h2,
body.light-theme .message-content h4,
body.light-theme .message-content h5,
body.light-theme .message-content h6 {
    color: #0f172a;
}
body.light-theme .message-content h3 {
    color: #0284c7;
}

.message-content p {
    margin: 0 0 10px 0;
}
.message-content p:last-child {
    margin-bottom: 0;
}

.message-content strong,
.message-content b {
    font-weight: 600;
    color: #ffffff;
}
body.light-theme .message-content strong,
body.light-theme .message-content b {
    color: #0f172a;
}

.message-content em,
.message-content i {
    font-style: italic;
}

.message-content ul,
.message-content ol {
    margin: 8px 0 12px 0;
    padding-left: 22px;
}
.message-content li {
    margin-bottom: 5px;
    line-height: 1.6;
}
.message-content li:last-child {
    margin-bottom: 0;
}
.message-content li > p {
    margin: 0;
    display: inline;
}

/* Inline Code */
.message-content :not(pre) > code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.88em;
    padding: 2px 6px;
    border-radius: 5px;
    background: rgba(0, 170, 255, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(0, 170, 255, 0.25);
}
body.light-theme .message-content :not(pre) > code {
    background: rgba(2, 132, 199, 0.1);
    color: #0369a1;
    border-color: rgba(2, 132, 199, 0.2);
}

/* Code Block Wrapper */
.code-block-wrapper {
    margin: 14px 0;
    border-radius: 10px;
    overflow: hidden;
    background: #0f172a;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}
body.light-theme .code-block-wrapper {
    background: #1e293b;
    border-color: #cbd5e1;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

.code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.76rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.copy-code-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}
.copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}
.copy-code-btn svg {
    width: 14px;
    height: 14px;
}

.message-content pre {
    margin: 0;
    padding: 12px 16px;
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.88rem;
    line-height: 1.55;
    background: transparent !important;
}
.message-content pre code {
    background: transparent !important;
    padding: 0;
    border: none;
    color: #e2e8f0;
    font-family: inherit;
}

/* Blockquotes */
.message-content blockquote {
    margin: 12px 0;
    padding: 8px 16px;
    border-left: 4px solid var(--primary-accent);
    background: rgba(0, 170, 255, 0.08);
    border-radius: 0 8px 8px 0;
    color: var(--text-color-light);
    font-style: italic;
}
body.light-theme .message-content blockquote {
    background: rgba(2, 132, 199, 0.06);
}

/* Tables */
.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 0.88rem;
    overflow-x: auto;
    display: block;
}
.message-content th,
.message-content td {
    border: 1px solid var(--border-color);
    padding: 8px 14px;
    text-align: left;
}
.message-content th {
    background: rgba(255, 255, 255, 0.06);
    font-weight: 600;
}
body.light-theme .message-content th {
    background: rgba(0, 0, 0, 0.04);
}
.message-content tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

/* Links & Horizontal Rules */
.message-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 16px 0;
}
.message-content a {
    color: #38bdf8;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: opacity 0.2s;
}
body.light-theme .message-content a {
    color: #0284c7;
}
.message-content a:hover {
    opacity: 0.8;
}

/*
 * --- Message Action Button Styles ---
 */
.message-actions {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
}

.user-message-wrapper .message-actions { 
  justify-content: flex-end; 
  margin-right: 5px;
}
.bot-message-wrapper .message-actions { 
  justify-content: flex-start; 
  margin-left: 5px;
  opacity: 1;
}

/* User message actions: show only on hover */
.user-message-wrapper .message-actions {
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
  pointer-events: none;
}
.user-message-wrapper:hover .message-actions {
  opacity: 1;
  pointer-events: auto;
}

/* Base style for all icon buttons in actions */
.action-btn {
  background: none;
  color: var(--text-color-light);
  border: none;
  border-radius: 50px;
  padding: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  line-height: 1;
}
.action-btn svg {
    width: 16px;
    height: 16px;
    stroke-width: 2;
}

body.light-theme .action-btn {
  color: var(--text-color-light);
}

.action-btn:hover {
  transform: scale(1.1);
  color: var(--text-color);
}

body.light-theme .action-btn:hover {
    color: var(--primary-accent);
}

.like-btn:hover { color: #00ffb3; }
.dislike-btn:hover { color: #ff6b6b; }

.like-btn.active { color: #00ffb3; }
.dislike-btn.active { color: #ff6b6b; }

body.light-theme .like-btn:hover { color: #28a745; }
body.light-theme .dislike-btn:hover { color: #dc3545; }

body.light-theme .like-btn.active { color: #28a745; }
body.light-theme .dislike-btn.active { color: #dc3545; }

/* Styled User Delete Button */
.user-delete-btn {
    padding: 6px 8px;
    border-radius: 8px !important;
}
.user-delete-btn:hover {
    background: rgba(255, 71, 87, 0.1);
    color: var(--danger-red);
}
 body.light-theme .user-delete-btn:hover {
    background: rgba(220, 53, 69, 0.1);
}

/* --- AI Message Menu Styles --- */
.message-actions .actions-container {
    position: relative;
    display: flex;
    align-items: center;
}

.message-menu-btn {
    background: none;
    border: none;
    color: var(--text-color-light);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}
.message-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
}
body.light-theme .message-menu-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

.message-actions-popover {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: calc(100% + 10px);
    background: var(--background-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 10;
    overflow: hidden;
    display: none;
    width: 150px; 
    padding: 5px 0;
    animation: fadeIn 0.2s ease-out;
}
body.light-theme .message-actions-popover {
    background: var(--background-tertiary);
}

.message-actions-popover.visible { display: block; }

.message-actions-popover button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%; 
    text-align: left;
    background: none; 
    border: none; 
    color: var(--text-color-light);
    padding: 10px 15px;
    cursor: pointer;
    font-size: 0.9rem;
    box-sizing: border-box;
}
body.light-theme .message-actions-popover button {
    color: var(--text-color);
}
.message-actions-popover button:hover { 
    background: var(--background-secondary); 
    color: var(--text-color);
}
.message-actions-popover svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    fill: currentColor;
}

.chat-input { 
    display: flex; 
    padding: 12px; 
    background: var(--input-bg); 
    align-items: center; 
    border-radius: 15px; 
    margin: 20px; 
    border: 1px solid var(--border-color); 
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
body:not(.light-theme) .chat-input {
    backdrop-filter: blur(5px);
}

.chat-input input[type="text"] { 
    flex: 1; 
    padding: 10px; 
    border: none; 
    outline: none; 
    background: transparent; 
    color: var(--text-color); 
    font-family: 'Poppins', sans-serif; 
    transition: color 0.3s; 
    min-width: 0;
}
.chat-input input:focus { box-shadow: none; }
.chat-input input::placeholder { color: var(--text-color-light); opacity: 0.8; }
.chat-input input.logged-out-placeholder::placeholder {
    color: var(--primary-accent);
    opacity: 0.8;
    text-shadow: 0 0 5px var(--shadow-color);
}
body.light-theme .chat-input input.logged-out-placeholder::placeholder {
    text-shadow: none;
}

.chat-input label { 
    margin-left: 10px; 
    cursor: pointer; 
    color: var(--icon-color); 
    transition: color 0.3s, text-shadow 0.3s;
    display: flex;
    align-items: center;
}
.chat-input label:hover { 
    color: var(--primary-accent); 
    text-shadow: 0 0 8px var(--shadow-color); 
    transform: scale(1.1); 
}
body.light-theme .chat-input label:hover {
    text-shadow: none;
}

/* Mic Button Style */
#voiceBtn {
  padding: 5px;
  border: none;
  background: transparent;
  color: var(--icon-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s, transform 0.2s;
  margin: 0 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
#voiceBtn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}
#voiceBtn:hover { 
    color: var(--primary-accent); 
    text-shadow: 0 0 8px var(--shadow-color); 
    transform: scale(1.1); 
}
body.light-theme #voiceBtn:hover {
    text-shadow: none;
}
#voiceBtn.is-listening { 
    color: var(--primary-accent); 
    animation: pulse 1.5s infinite; 
    transform: scale(1.1); 
}
body.light-theme #voiceBtn.is-listening {
  text-shadow: none !important;
}

/* Send Button */
.chat-input button { 
    padding: 10px 16px; 
    border: 1px solid var(--primary-accent); 
    background: transparent; 
    color: var(--primary-accent); 
    border-radius: 8px; 
    cursor: pointer; 
    transition: all 0.3s, transform 0.2s; 
    font-family: 'Poppins', sans-serif; 
    font-weight: 500; 
    text-shadow: 0 0 5px var(--shadow-color); 
}
body.light-theme .chat-input button {
    text-shadow: none;
    box-shadow: 0 2px 5px rgba(0, 123, 255, 0.2);
}
.chat-input button:hover { 
    background: var(--primary-accent); 
    color: white; 
    box-shadow: 0 0 20px var(--primary-accent); 
    text-shadow: none; 
    transform: scale(1.03); 
}

/* Send Button Loading State */
.chat-input button#sendBtn.is-loading {
    background: var(--secondary-accent);
    color: white;
    border-color: var(--secondary-accent);
    cursor: wait;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 5px;
    transform: scale(1);
    box-shadow: none;
    text-shadow: none;
}

#stopGeneratingBtn { display: none; margin-left: 10px; }

/* --- Typing Indicator Styles --- */
.typing-indicator-wrapper {
    align-self: flex-start;
    display: none;
    margin-bottom: 15px;
    max-width: 80%; 
    width: fit-content;
}
.typing-indicator {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    border-radius: 15px;
    background: linear-gradient(135deg, var(--background-secondary), #2a2250);
    color: white;
    border: 1px solid var(--secondary-accent);
    box-shadow: 0 0 15px rgba(212, 0, 255, 0.2);
    border-bottom-left-radius: 2px;
    font-size: 0.9rem;
}
body.light-theme .typing-indicator {
    background: var(--background-secondary);
    color: var(--text-color);
    border-color: #ced4da;
    box-shadow: none;
}

.typing-indicator span {
    margin-left: 8px;
    font-style: italic;
    color: var(--text-color-light);
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-accent);
    border-radius: 50%;
    margin: 0 2px;
    animation: bounce 1.4s infinite ease-in-out both;
}
.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0s; }

@keyframes bounce {
    0%, 80%, 100% { transform: translateY(-3px); }
    40% { transform: translateY(-9px); }
}


/* --- File Preview & Message Attachments --- */
#filePreviewContainer {
    display: none;
    padding: 0 20px;
    margin: -10px 0 10px 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.file-preview {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--user-bubble-bg);
    padding: 8px 12px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s;
    color: var(--text-color);
}
body.light-theme .file-preview {
    color: var(--text-color);
}
.file-preview:hover {
    transform: translateY(-2px);
}
.file-preview-thumbnail {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.file-preview-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}
.file-preview-thumbnail svg {
    width: 32px;
    height: 32px;
    color: var(--text-color-light);
}
.file-preview-info {
    display: flex;
    flex-direction: column;
}
.file-preview-name {
    font-size: 0.9rem;
    font-weight: 500;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.file-preview-size {
    font-size: 0.75rem;
    color: var(--text-color-light);
}
#removeFileBtn {
    background: none;
    border: none;
    color: var(--text-color-light);
    cursor: pointer;
    font-size: 1.5rem;
    padding: 0 5px;
    line-height: 1;
    transition: color 0.2s;
}
#removeFileBtn:hover {
    color: var(--text-color);
}

.message img {
    max-width: 100%;
    max-height: 250px;
    border-radius: 10px;
    display: block;
    margin-bottom: 8px;
}

.message .file-attachment {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    margin-bottom: 8px;
    background: rgba(0,0,0,0.15);
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}
body.light-theme .message .file-attachment {
    background: rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.1);
}
.message .file-attachment a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.message .file-attachment svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.message audio {
  width: 100%;
  max-width: 250px;
  margin-top: 5px;
  filter: saturate(0.8) hue-rotate(200deg);
}


/* --- Session History Panel --- */
#session-panel {
    width: 280px;
    flex-shrink: 0;
    background: var(--background-secondary);
    backdrop-filter: blur(5px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 15px;
    box-sizing: border-box;
    transition: transform 0.4s ease, width 0.4s ease, padding 0.4s ease, opacity 0.8s ease-in, background 0.4s ease;
    overflow-x: hidden;
}
body.light-theme #session-panel {
    background: var(--background-secondary);
    border-right-color: var(--border-color);
}

.session-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

#session-panel h3 {
    font-family: 'Audiowide', sans-serif;
    margin: 0;
    color: var(--primary-accent);
    font-weight: 400;
}

#newChatBtn {
    width: 100%;
    margin-bottom: 20px;
}

.search-input-group {
    margin-bottom: 15px;
    position: relative;
}
#sessionSearch {
    width: 100%;
    padding: 8px 12px;
    padding-left: 35px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
    box-sizing: border-box;
    transition: all 0.3s;
}
#sessionSearch:focus {
    border-color: var(--primary-accent);
    box-shadow: 0 0 8px var(--shadow-color);
}
body.light-theme #sessionSearch {
    background: var(--input-bg);
    color: var(--text-color);
}
.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--icon-color);
    width: 18px;
    height: 18px;
}

#session-list {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
    flex-grow: 1;
}
#session-list::-webkit-scrollbar { width: 3px; }
#session-list::-webkit-scrollbar-track { background: transparent; }
#session-list::-webkit-scrollbar-thumb { background: var(--secondary-accent); border-radius: 10px; }

#session-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
    margin-bottom: 10px;
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: all 0.3s ease, transform 0.2s;
    position: relative;
}
body.light-theme #session-list li {
    background: #f1f3f5;
    color: var(--text-color);
}

#session-list li:hover {
    background: rgba(0,0,0,0.4);
    transform: translateX(5px);
}
body.light-theme #session-list li:hover {
    background: #e9ecef;
    transform: translateX(0);
}

.session-info {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-grow: 1;
    padding-right: 10px;
}

.session-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.session-date {
    font-size: 0.75rem;
    color: var(--text-color-light);
    margin-top: 2px;
}

.rename-input {
    flex-grow: 1;
    background: var(--background-primary);
    border: 1px solid var(--primary-accent);
    color: var(--text-color);
    padding: 5px;
    border-radius: 4px;
    font-family: 'Poppins', sans-serif;
    font-size: inherit;
    box-sizing: border-box;
    outline: none;
}

.session-actions {
    display: flex;
    align-items: center;
    background: rgba(0,0,0,0.4);
    border-radius: 5px;
    opacity: 0; 
    transition: opacity 0.2s;
    pointer-events: none;
    flex-shrink: 0;
    position: relative;
}
body.light-theme .session-actions {
    background: rgba(0,0,0,0.1);
}

#session-list li:hover .session-actions {
    opacity: 1;
    pointer-events: auto;
}

.actions-menu-btn {
    background: none; border: none; color: var(--icon-color); cursor: pointer;
    font-size: 1.2rem; padding: 5px;
}
.actions-menu-btn:hover { color: var(--text-color); }

.actions-popover {
    position: absolute;
    right: 0;
    top: 30px;
    background: var(--background-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 10;
    overflow: hidden;
    display: none;
    width: 140px;
    padding: 5px 0;
    animation: fadeIn 0.15s ease-out;
}
body.light-theme .actions-popover {
    background: var(--background-tertiary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.actions-popover.visible { display: block; }
.actions-popover.up { top: auto; bottom: 25px; }
.actions-popover button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%; 
    text-align: left;
    background: none; 
    border: none; 
    color: var(--text-color); 
    padding: 10px 15px;
    cursor: pointer;
    font-size: 0.9rem;
    box-sizing: border-box;
    transition: background-color 0.2s ease, color 0.2s ease;
}
.actions-popover button:hover { 
    background: var(--background-secondary); 
    color: var(--primary-accent);
}
body.light-theme .actions-popover button:hover {
    background: var(--background-secondary);
    color: var(--primary-accent);
}
.actions-popover button svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    stroke-width: 2;
    color: var(--icon-color);
}
.actions-popover button:hover svg {
    color: var(--primary-accent);
}

.actions-popover .delete-action { color: var(--danger-red); }
.actions-popover .delete-action:hover { color: #ff6b6b; }
.actions-popover .delete-action:hover svg { color: #ff6b6b; }

#session-list li.active {
    background: var(--background-secondary);
    border-left-color: var(--primary-accent);
    font-weight: 600;
    transform: none;
}
 body.light-theme #session-list li.active {
    background: #dbe4f0;
 }

#closeHistoryBtn, #openHistoryBtn {
  background: none;
  border: none;
  color: var(--text-color-light);
  cursor: pointer;
  padding: 5px;
  display: none;
  line-height: 1;
  transition: color 0.2s, transform 0.2s;
}
#closeHistoryBtn svg, #openHistoryBtn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}
#closeHistoryBtn:hover, #openHistoryBtn:hover {
    color: var(--primary-accent);
    transform: scale(1.1);
}

/* Theme switcher container style */
.theme-switcher-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 10px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--background-primary);
}
body.light-theme .theme-switcher-container {
    background: #ffffff;
}
.theme-switcher-container .theme-label {
  font-size: 0.9rem;
  color: var(--text-color-light);
}
.theme-switcher {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.theme-switcher input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #555;
  transition: .4s;
  border-radius: 24px;
}
body.light-theme .slider { background-color: #ccc; }
input:checked + .slider {
  background-color: var(--primary-accent);
}
.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}
input:checked + .slider:before {
  transform: translateX(20px);
}

/* Profile Button Style (in sidebar footer) */
#profile-section-footer .user-greeting-btn {
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  padding: 10px 15px;
  font: inherit;
  cursor: pointer;
  outline: inherit;
  display: none;
  align-items: center; 
  color: var(--text-color);
  text-shadow: 0 0 5px var(--shadow-color);
  transition: all 0.2s;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 8px;
  width: 100%;
  text-align: center;
  box-sizing: border-box;
}
#profile-section-footer .user-greeting-btn:hover {
  border-color: var(--primary-accent);
  color: var(--primary-accent);
  background: rgba(0, 170, 255, 0.1);
  box-shadow: 0 0 10px var(--shadow-color);
}
body.light-theme #profile-section-footer .user-greeting-btn {
    text-shadow: none;
    font-weight: 500;
    background: var(--background-tertiary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    color: var(--text-color);
}
body.light-theme #profile-section-footer .user-greeting-btn:hover {
    transform: none;
    color: var(--primary-accent);
    border-color: var(--primary-accent);
    background: rgba(0, 123, 255, 0.05);
}

/* Credits relocated to sidebar */
#session-panel .credits {
    padding-top: 15px;
    margin-top: auto;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-color-light);
    flex-shrink: 0;
    display: block;
}

/* --- Toast Notification --- */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-accent);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 15px var(--shadow-color);
  z-index: 2000;
  opacity: 0;
  transform: translateY(20px) translateX(-50%);
  transition: opacity 0.3s ease-out, transform 0.3s ease-out;
  font-weight: 500;
  pointer-events: none;
}
body.light-theme .toast {
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}
.toast.show {
  opacity: 1;
  transform: translateY(0) translateX(-50%);
}


/* Keyframe Animations */
@keyframes gradient-pan { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
@keyframes fadeIn { from {opacity: 0; transform: translateY(10px);} to {opacity: 1; transform: translateY(0);} }
@keyframes pulse {
  0% { transform: scale(1); text-shadow: 0 0 5px var(--shadow-color); }
  50% { transform: scale(1.1); text-shadow: 0 0 15px var(--primary-accent); }
  100% { transform: scale(1); text-shadow: 0 0 5px var(--shadow-color); }
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
@keyframes pulse-small {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* --- Intro Animation --- */
.anim-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.anim-item.visible {
  opacity: 1;
  transform: translateY(0);
}
.chat-input, #session-panel {
  opacity: 0;
  transition: opacity 0.8s ease-in;
}
.chat-input.visible, #session-panel.visible-anim {
  opacity: 1;
}

.spinner-icon {
    width: 16px;
    height: 16px;
    display: inline-block;
    vertical-align: middle;
    fill: currentColor;
}


/* --- Desktop Sidebar Logic --- */
@media (min-width: 769px) {
    #openHistoryBtn {
        display: none;
    }
    #closeHistoryBtn {
        display: block;
    }
    .main-container.sidebar-collapsed #session-panel {
        width: 0;
        padding-left: 0;
        padding-right: 0;
        border-right: none;
        transform: translateX(0);
    }
    .main-container.sidebar-collapsed #openHistoryBtn {
        display: block;
    }
    .main-container.sidebar-collapsed .site-header {
        left: 20px;
        right: 20px;
    }
    .main-container.sidebar-collapsed #closeHistoryBtn {
        display: none;
    }
    #mobile-backdrop {
        display: none !important;
    }
}

/* --- Mobile Responsive Styles --- */
@media (max-width: 768px) {
    body { padding: 0; }
    .main-container { flex-direction: column; }
    
    .chat-area {
        flex: 1;
        min-height: 0;
        padding: 0;
        width: 100%;
    }

    /* --- MOBILE UI FIXES --- */
    .site-header {
        position: sticky;
        top: 0; right: 0; left: 0;
        padding: 10px 5px;
        background: var(--background-secondary);
        border-bottom: 1px solid var(--border-color);
        z-index: var(--z-header);
        flex-wrap: wrap;
        row-gap: 5px;
    }
    
    .site-header .header-actions {
        margin-left: 0;
        gap: 5px;
        flex-basis: 100%;
        justify-content: flex-end;
    }
    
    #historyBtn {
        display: none;
    }
    #openHistoryBtn {
        display: block;
        margin-right: 5px;
        padding: 8px 10px;
        font-size: 0.8rem;
        flex-shrink: 0;
    }
    
    /* Smaller header buttons on mobile */
    .site-header #showLoginBtn, 
    .site-header #showSignupBtn, 
    .site-header #logoutBtn,
    .site-header #headerFeedbackBtn {
        padding: 8px 10px;
        font-size: 0.8rem;
    }
    .user-greeting-btn {
        font-size: 0.9rem;
        margin-right: 5px;
    }

    .mode-selector-container {
        margin-right: 5px;
        flex-grow: 1;
    }
    #modeSelector {
        font-size: 0.8rem;
        padding: 8px 25px 8px 10px;
        width: 100%;
    }
    .mode-selector-container::after {
        right: 8px;
    }
    
    /* Mobile Sidebar */
    #session-panel {
        position: fixed;
        left: 0; top: 0;
        height: 100%;
        z-index: 1100;
        transform: translateX(-100%);
        border-right: 1px solid var(--border-color);
        border-left: none;
        width: 280px;
    }

    #session-panel.visible { 
        transform: translateX(0); 
    }
    
    .chat-container {
        position: relative;
        width: 100%;
        height: 100%;
        border-radius: 0;
        box-sizing: border-box;
        border: none;
        box-shadow: none;
        background: none;
    }

    #session-list li .session-actions { opacity: 1; pointer-events: auto; }
    #closeHistoryBtn { display: none !important; }
    
    .profile-modal-content,
    .share-modal-content,
    .feedback-modal-content {
      width: 95%;
      max-height: 95vh;
      padding: 20px;
    }
    .profile-modal-header h2,
    #share-modal .profile-modal-header h2,
    .feedback-modal-content .profile-modal-header h2 {
      font-size: 1.8rem;
    }

    /* Make chat input smaller on mobile */
    .chat-input {
        margin: 10px;
        padding: 8px;
    }
    .chat-input input[type="text"] {
        padding: 8px;
        font-size: 16px; /* Prevents iOS auto-zoom */
    }
    .chat-input button {
        padding: 8px 12px;
    }
    #voiceBtn {
        margin: 0 5px;
    }
    .chat-input label {
        margin-left: 5px;
    }
    /* Make user message actions visible on mobile */
    .user-message-wrapper .message-actions {
        opacity: 1;
        pointer-events: auto;
    }
}

/* === Tooltip Base Style === */
.action-btn {
  position: relative;
}

/* Base Tooltip Style */
.action-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 130%;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 10;
}
.action-btn:hover::after {
  opacity: 1;
  transform: translate(-50%, 5px);
}

/* Tooltip Colors */
.like-btn::after {
  background: rgba(0, 255, 150, 0.15);
  color: #00ffb3;
  box-shadow: 0 0 10px rgba(0,255,150,0.5);
}
.dislike-btn::after {
  background: rgba(255, 90, 90, 0.15);
  color: #ff5c6c;
  box-shadow: 0 0 10px rgba(255,90,90,0.4);
}
.action-btn[data-tooltip="Copy"]::after {
   background: rgba(200, 200, 200, 0.15);
   color: #ddd;
   box-shadow: 0 0 10px rgba(200,200,200,0.4);
}
.user-delete-btn::after {
    background: rgba(255, 90, 90, 0.15);
    color: #ff5c6c;
    box-shadow: 0 0 10px rgba(255,90,90,0.4);
}
.action-btn[data-tooltip="Edit Message"]::after {
   background: rgba(0, 170, 255, 0.15);
   color: #00aaff;
   box-shadow: 0 0 10px rgba(0, 170, 255, 0.5);
}


/* --- Contact Manager Modal Content Styles --- */
.contact-header h3 {
    font-family: 'Audiowide', sans-serif;
    color: var(--primary-accent);
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.25rem;
}
.contact-header p {
    color: var(--text-color-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 15px;
}
.contact-intro {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-color-light);
    margin-bottom: 20px;
}
.contact-intro strong {
    color: var(--text-color);
}
.contact-note {
    background: var(--background-primary);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}
.contact-note p {
    margin: 0 0 10px 0;
    font-size: 0.9rem;
    color: var(--text-color-light);
    line-height: 1.5;
}
.contact-note p:last-child {
    margin-bottom: 0;
}
.inline-contact-link {
    color: var(--primary-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    word-break: break-all;
    transition: opacity 0.2s, color 0.2s;
}
.inline-contact-link:hover {
    opacity: 0.8;
}

.contact-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}

.contact-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s, transform 0.2s;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    text-decoration: none;
    box-sizing: border-box; 
}
.contact-btn svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    fill: currentColor;
}

/* General Hover */
.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* WhatsApp Button Color */
.whatsapp-btn {
    color: #25D366;
    border-color: rgba(37, 211, 102, 0.4);
}
.whatsapp-btn:hover {
    border-color: #25D366;
    color: #25D366;
    background: rgba(37, 211, 102, 0.1);
    box-shadow: 0 0 15px rgba(37, 211, 102, 0.4);
}

/* Email Button Color */
.email-btn {
    color: #ea4335;
    border-color: rgba(234, 67, 53, 0.4);
}
.email-btn:hover {
    border-color: #ea4335;
    color: #ea4335;
    background: rgba(234, 67, 53, 0.1);
    box-shadow: 0 0 15px rgba(234, 67, 53, 0.4);
}

/* Portfolio Button Color */
.portfolio-btn {
    color: #00d2ff;
    border-color: rgba(0, 210, 255, 0.4);
}
.portfolio-btn:hover {
    border-color: #00d2ff;
    color: #00d2ff;
    background: rgba(0, 210, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 210, 255, 0.4);
}