/* ===================================
   J3 Chat AI - Modern Theme System
   Inspired by ChatGPT & Grok Design
   =================================== */

/* CSS Variables for Theme System */
:root[data-theme="light"] {
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f8;
  --bg-tertiary: #ececf1;
  --bg-hover: #e8e8ed;
  --bg-active: #d9d9e3;
  
  /* Text Colors */
  --text-primary: #0d0d0d;
  --text-secondary: #565869;
  --text-tertiary: #8e8ea0;
  --text-inverse: #ffffff;
  
  /* Border Colors */
  --border-primary: #e5e5e5;
  --border-secondary: #d1d5db;
  --border-hover: #c7c7c7;
  
  /* Accent Colors */
  --accent-primary: #10a37f;
  --accent-secondary: #19c37d;
  --accent-hover: #0e8d6f;
  --accent-grok: #8b5cf6;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;
  
  /* Chat Message Colors */
  --msg-user-bg: #f7f7f8;
  --msg-assistant-bg: #ffffff;
  --msg-user-border: #e5e5e5;
  --msg-assistant-border: transparent;
  
  /* Card & Component Colors */
  --card-bg: #ffffff;
  --card-border: #e5e5e5;
  --card-shadow: rgba(0, 0, 0, 0.05);
  
  /* Navbar Colors */
  --navbar-bg: #ffffff;
  --navbar-border: #e5e5e5;
  --navbar-text: #0d0d0d;
  --navbar-hover: #f7f7f8;
  
  /* Input Colors */
  --input-bg: #ffffff;
  --input-border: #d1d5db;
  --input-focus: #10a37f;
  --input-text: #0d0d0d;
  --input-placeholder: #8e8ea0;
}

:root[data-theme="dark"] {
  /* Background Colors */
  --bg-primary: #212121;
  --bg-secondary: #2f2f2f;
  --bg-tertiary: #3a3a3a;
  --bg-hover: #404040;
  --bg-active: #4a4a4a;
  
  /* Text Colors */
  --text-primary: #ececec;
  --text-secondary: #c5c5d2;
  --text-tertiary: #8e8ea0;
  --text-inverse: #0d0d0d;
  
  /* Border Colors */
  --border-primary: #3e3e3e;
  --border-secondary: #4a4a4a;
  --border-hover: #565656;
  
  /* Accent Colors */
  --accent-primary: #19c37d;
  --accent-secondary: #10a37f;
  --accent-hover: #1ed88d;
  --accent-grok: #9d6fff;
  --accent-danger: #f87171;
  --accent-warning: #fbbf24;
  
  /* Chat Message Colors */
  --msg-user-bg: #2f2f2f;
  --msg-assistant-bg: #212121;
  --msg-user-border: #3e3e3e;
  --msg-assistant-border: transparent;
  
  /* Card & Component Colors */
  --card-bg: #2f2f2f;
  --card-border: #3e3e3e;
  --card-shadow: rgba(0, 0, 0, 0.3);
  
  /* Navbar Colors */
  --navbar-bg: #171717;
  --navbar-border: #2f2f2f;
  --navbar-text: #ececec;
  --navbar-hover: #2f2f2f;
  
  /* Input Colors */
  --input-bg: #2f2f2f;
  --input-border: #4a4a4a;
  --input-focus: #19c37d;
  --input-text: #ececec;
  --input-placeholder: #8e8ea0;
}

/* Base Styles */
html {
  font-size: 14px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  margin-bottom: 60px;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

/* Theme Toggle Button */
.theme-toggle {
  position: relative;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background-color 0.2s ease;
  color: var(--navbar-text);
}

.theme-toggle:hover {
  background-color: var(--navbar-hover);
}

.theme-icon-light,
.theme-icon-dark {
  font-size: 1.25rem;
  transition: opacity 0.3s ease;
}

[data-theme="light"] .theme-icon-dark,
[data-theme="dark"] .theme-icon-light {
  display: none;
}

/* Navbar Styling */
.navbar-custom {
  background-color: var(--navbar-bg);
  border-bottom: 1px solid var(--navbar-border);
  padding: 0.75rem 1rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.navbar-custom .navbar-brand {
  color: var(--navbar-text);
  font-size: 1.25rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.navbar-custom .navbar-brand:hover {
  color: var(--accent-primary);
}

.navbar-custom .nav-link {
  color: var(--navbar-text);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: background-color 0.2s ease, color 0.2s ease;
  font-weight: 500;
}

.navbar-custom .nav-link:hover {
  background-color: var(--navbar-hover);
  color: var(--accent-primary);
}

.navbar-custom .dropdown-menu {
  background-color: var(--card-bg);
  border: 1px solid var(--border-primary);
  box-shadow: 0 4px 6px -1px var(--card-shadow);
}

.navbar-custom .dropdown-item {
  color: var(--text-primary);
  transition: background-color 0.2s ease;
}

.navbar-custom .dropdown-item:hover {
  background-color: var(--bg-hover);
  color: var(--accent-primary);
}

/* Card Styling */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px var(--card-shadow);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 4px 6px -1px var(--card-shadow);
}

.card-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  color: var(--text-primary);
  font-weight: 600;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.card-body {
  color: var(--text-primary);
}

/* Button Styling */
.btn {
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-outline-primary {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.btn-outline-primary:hover {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--text-inverse);
}

.btn-success {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.btn-danger {
  background-color: var(--accent-danger);
  border-color: var(--accent-danger);
}

/* Form Controls */
.form-control,
.form-select {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  border-radius: 0.5rem;
  transition: all 0.2s ease;
}

.form-control:focus,
.form-select:focus {
  background-color: var(--input-bg);
  border-color: var(--input-focus);
  color: var(--input-text);
  box-shadow: 0 0 0 0.2rem rgba(16, 163, 127, 0.15);
}

.form-control::placeholder {
  color: var(--input-placeholder);
}

.form-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Badge Styling */
.badge {
  padding: 0.35rem 0.65rem;
  border-radius: 0.375rem;
  font-weight: 500;
}

.bg-primary {
  background-color: var(--accent-primary) !important;
}

.bg-success {
  background-color: var(--accent-primary) !important;
}

.bg-danger {
  background-color: var(--accent-danger) !important;
}

.bg-warning {
  background-color: var(--accent-warning) !important;
}

/* Chat Message Styling */
.message-container {
  padding: 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
  transition: background-color 0.3s ease;
}

.user-message {
  background-color: var(--msg-user-bg);
  border: 1px solid var(--msg-user-border);
}

.assistant-message {
  background-color: var(--msg-assistant-bg);
  border: 1px solid var(--msg-assistant-border);
}

/* Text Colors */
.text-muted {
  color: var(--text-tertiary) !important;
}

.text-secondary {
  color: var(--text-secondary) !important;
}

/* Links */
a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* Footer */
.footer {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-top: 1px solid var(--border-primary);
  transition: all 0.3s ease;
}

.footer a {
  color: var(--text-secondary);
}

.footer a:hover {
  color: var(--accent-primary);
}

/* List Group */
.list-group-item {
  background-color: var(--card-bg);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.list-group-item:hover {
  background-color: var(--bg-hover);
}

/* Table Styling */
.table {
  color: var(--text-primary);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: var(--bg-secondary);
}

.table-hover > tbody > tr:hover > * {
  background-color: var(--bg-hover);
}

/* Modal */
.modal-content {
  background-color: var(--card-bg);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
}

.modal-header {
  border-bottom: 1px solid var(--border-primary);
}

.modal-footer {
  border-top: 1px solid var(--border-primary);
}

/* Alert */
.alert {
  border-radius: 0.75rem;
  border: 1px solid var(--border-primary);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* Code Blocks */
pre {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: 0.5rem;
  padding: 1rem;
  color: var(--text-primary);
}

code {
  background-color: var(--bg-tertiary);
  color: var(--accent-primary);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
}

/* Smooth Transitions */
* {
  transition-property: background-color, border-color, color;
  transition-duration: 0.3s;
  transition-timing-function: ease;
}

button, input, select, textarea, a {
  transition-duration: 0.2s;
}

/* Focus States */
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.2rem rgba(16, 163, 127, 0.25);
  outline: none;
}

/* Container Spacing */
.container-fluid {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 768px) {
  .container-fluid {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* Animation for theme switch */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}