/* ============ BASE STYLES ============ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
@import './theme.css';
@import './components.css';
@import './utilities.css';

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  min-height: 100vh;
  transition: background-color var(--transition-base);
}

/* ============ LAYOUT ============ */
.app-container {
  display: flex;
  flex-direction: column;
  /* min-height: 100vh; */
}

.main-content {
  flex: 1;
  padding-top: 64px; /* Navbar height */
}

/* ============ NAVIGATION ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.navbar-logo {
  width: 40px;
  height: 40px;
  transition: transform var(--transition-base);
}

.navbar-logo:hover {
  transform: scale(1.05);
}

.navbar-title {
  font-size: var(--text-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  color: var(--color-gray-600);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-indigo);
}

.nav-link.active {
  color: var(--primary-indigo);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

/* ============ BUTTONS ============ */
.btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: var(--text-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--gradient-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary-indigo);
  border: 2px solid var(--primary-indigo);
}

.btn-outline:hover {
  background: var(--primary-indigo);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-600);
}

.btn-ghost:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
}

/* ============ MOBILE MENU ============ */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: white;
  padding: var(--space-4);
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .navbar-actions {
    display: none;
  }
}

/* ============ LOADING STATES ============ */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--primary-indigo);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(90deg, 
    var(--color-gray-200) 25%, 
    var(--color-gray-100) 50%, 
    var(--color-gray-200) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============ PAGE TRANSITIONS ============ */
.page-enter {
  opacity: 0;
  transform: translateY(10px);
}

.page-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: all var(--transition-base);
}

.page-exit {
  opacity: 1;
}

.page-exit-active {
  opacity: 0;
  transition: opacity var(--transition-fast);
}/* ============ BASE STYLES ============ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
@import './theme.css';
@import './components.css';
@import './utilities.css';

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  min-height: 100vh;
  transition: background-color var(--transition-base);
}

/* ============ LAYOUT ============ */
.app-container {
  display: flex;
  flex-direction: column;
  /* min-height: 100vh; */
}

.main-content {
  flex: 1;
  padding-top: 64px; /* Navbar height */
}

/* ============ NAVIGATION ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.navbar-logo {
  width: 40px;
  height: 40px;
  transition: transform var(--transition-base);
}

.navbar-logo:hover {
  transform: scale(1.05);
}

.navbar-title {
  font-size: var(--text-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  color: var(--color-gray-600);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-indigo);
}

.nav-link.active {
  color: var(--primary-indigo);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

/* ============ BUTTONS ============ */
.btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: var(--text-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--gradient-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary-indigo);
  border: 2px solid var(--primary-indigo);
}

.btn-outline:hover {
  background: var(--primary-indigo);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-600);
}

.btn-ghost:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
}

/* ============ MOBILE MENU ============ */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: white;
  padding: var(--space-4);
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .navbar-actions {
    display: none;
  }
}

/* ============ LOADING STATES ============ */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--primary-indigo);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(90deg, 
    var(--color-gray-200) 25%, 
    var(--color-gray-100) 50%, 
    var(--color-gray-200) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============ PAGE TRANSITIONS ============ */
.page-enter {
  opacity: 0;
  transform: translateY(10px);
}

.page-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: all var(--transition-base);
}

.page-exit {
  opacity: 1;
}

.page-exit-active {
  opacity: 0;
  transition: opacity var(--transition-fast);
}

/* Add this to your main.css to complete the sidebar fixes */

/* ============ SIDEBAR ICON CENTERING FIX ============ */
.sidebar.collapsed .sidebar-link {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.75rem;
}

.sidebar.collapsed .sidebar-link-icon {
    margin: 0 !important;
}

/* Ensure sections have proper spacing when collapsed */
.sidebar.collapsed .sidebar-section {
    padding: 0.25rem 0;
}

/* ============ IMPROVED COLLAPSE BUTTON ============ */
.sidebar-collapse-handle {
    /* Better visibility */
    display: none;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.05),
        0 4px 6px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.sidebar-collapse-handle:hover {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
}

[data-theme="dark"] .sidebar-collapse-handle {
    background: linear-gradient(135deg, var(--dark-surface) 0%, rgba(51, 65, 85, 0.9) 100%);
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.2),
        0 4px 6px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* ============ MOBILE OVERLAY IMPROVEMENTS ============ */
@media (max-width: 1024px) {
    /* Ensure main content never shifts */
    body {
        overflow-x: hidden;
    }
    
    .main-content {
        padding-left: 0 !important;
        transition: none !important;
        transform: none !important;
    }
    
    /* Sidebar is always overlay on mobile/tablet */
    .sidebar {
        position: fixed;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        will-change: transform; /* Better performance */
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    /* YouTube-style overlay effect */
    .sidebar-overlay {
        backdrop-filter: blur(1px);
        -webkit-backdrop-filter: blur(1px); /* Safari support */
    }
}

/* ============ TOOLTIP IMPROVEMENTS FOR COLLAPSED STATE ============ */
.sidebar.collapsed .sidebar-link {
    position: relative;
}

.sidebar.collapsed .sidebar-link::before {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) scale(0.9);
    padding: 6px 12px;
    background: var(--color-gray-900);
    color: white;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.sidebar.collapsed .sidebar-link::after {
    content: '';
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 4px 4px 4px 0;
    border-color: transparent var(--color-gray-900) transparent transparent;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.sidebar.collapsed .sidebar-link:hover::before,
.sidebar.collapsed .sidebar-link:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) scale(1);
}

[data-theme="dark"] .sidebar.collapsed .sidebar-link::before {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

[data-theme="dark"] .sidebar.collapsed .sidebar-link::after {
    border-color: transparent var(--color-gray-100) transparent transparent;
}

/* ============ MOBILE SWIPE INDICATOR ============ */
@media (max-width: 768px) {
    .sidebar::after {
        content: '';
        position: absolute;
        right: -3px;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 60px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 3px;
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .sidebar.open::after {
        opacity: 1;
    }
}

/* ============ SMOOTH ANIMATIONS ============ */
@media (prefers-reduced-motion: no-preference) {
    .sidebar,
    .sidebar-overlay,
    .sidebar-collapse-handle {
        will-change: transform, opacity;
    }
    
    .sidebar {
        transition: 
            transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
            width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
            box-shadow 0.3s ease;
    }
    
    .sidebar-overlay {
        transition: 
            background-color 0.3s ease,
            backdrop-filter 0.3s ease;
    }
}