/* ==========================================================================
   Sakib Portfolio - Light Mode Premium Design System
   ========================================================================== */

:root {
  --bg-main: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F1F5F9;
  --bg-dark-accent: #0F172A;
  
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverse: #F8FAFC;

  --border-light: #E2E8F0;
  --border-dark: #0F172A;
  
  --accent-blue: #2563EB;
  --accent-blue-light: #EFF6FF;
  --accent-golden: #F59E0B;
  --accent-golden-light: #FEF3C7;
  --accent-emerald: #10B981;
  --accent-emerald-light: #ECFDF5;
  --accent-rose: #F43F5E;
  --accent-rose-light: #FFF1F2;
  --accent-purple: #8B5CF6;
  --accent-purple-light: #F5F3FF;

  --shadow-neo-sm: 2px 2px 0px 0px #0F172A;
  --shadow-neo-md: 4px 4px 0px 0px #0F172A;
  --shadow-neo-lg: 6px 6px 0px 0px #0F172A;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--bg-main);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #F1F5F9;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* Neo-Brutalist Light Cards */
.neo-card {
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-dark);
  box-shadow: var(--shadow-neo-sm);
  border-radius: 20px;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.neo-card-hover:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-neo-md);
}

.neo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border: 1.5px solid var(--border-dark);
  box-shadow: var(--shadow-neo-sm);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 9999px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease-in-out;
  user-select: none;
}

.neo-button:hover:not(:active) {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-neo-md);
}

.neo-button:active {
  transform: translate(1px, 1px);
  box-shadow: 0px 0px 0px 0px var(--border-dark);
}

.neo-button-primary {
  background-color: var(--accent-blue);
  color: #FFFFFF;
}

.neo-button-primary:hover:not(:active) {
  background-color: #1D4ED8;
  color: #FFFFFF;
}

.neo-button-amber {
  background-color: var(--accent-golden);
  color: #0F172A;
}

.neo-button-emerald {
  background-color: var(--accent-emerald);
  color: #FFFFFF;
}

.neo-button-dark {
  background-color: var(--bg-dark-accent);
  color: #FFFFFF;
}

.neo-button-dark:hover:not(:active) {
  background-color: #1E293B;
  color: #FFFFFF;
}

/* Badge styling */
.badge-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border-dark);
  box-shadow: 1px 1px 0px 0px var(--border-dark);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Hover Card Trigger */
.hover-card-trigger {
  position: relative;
}

.hover-card-content {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.75rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 50;
  min-width: 280px;
}

.hover-card-trigger:hover .hover-card-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Float Keyframes */
@keyframes subtle-float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.animate-float {
  animation: subtle-float 5s ease-in-out infinite;
}

/* Aspect Ratio Utilities */
.aspect-9-16 {
  aspect-ratio: 9 / 16;
}

.aspect-16-9 {
  aspect-ratio: 16 / 9;
}

.aspect-1-1 {
  aspect-ratio: 1 / 1;
}

/* Video Frame Rounded Corners */
.rounded-video-frame {
  border-radius: 16px;
  overflow: hidden;
}

.rounded-video-frame video {
  border-radius: 16px;
  object-fit: cover;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease-in-out;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: #FFFFFF;
  border: 2px solid var(--border-dark);
  box-shadow: 8px 8px 0px 0px var(--border-dark);
  border-radius: 24px;
  max-width: 960px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

/* Calendar Time Slot Grid */
.time-slot-btn {
  padding: 0.6rem 0.75rem;
  border: 1.5px solid var(--border-dark);
  box-shadow: 2px 2px 0px 0px var(--border-dark);
  border-radius: 12px;
  background-color: #FFFFFF;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.time-slot-btn:hover {
  background-color: var(--accent-blue-light);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.time-slot-btn.selected {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  border-color: var(--border-dark);
}

/* Expandable Category Container */
.category-dropdown-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  opacity: 0;
}

.category-dropdown-content.expanded {
  max-height: 3000px;
  opacity: 1;
}