/* ==========================================================================
   VISUM STUDIOS - Core Design System & Stylesheet
   Domain: visumstudios.art
   Voice: Playful & Powerful 3D Animation Agency
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&display=swap');

/* --- Custom Properties / Design Tokens --- */
:root {
  /* Color Palette */
  --bg-deep: #070A12;
  --bg-dark: #0A0E1A;
  --bg-surface: #0F1729;
  --bg-card: rgba(18, 26, 46, 0.72);
  --bg-card-hover: rgba(26, 38, 66, 0.85);
  --bg-input: rgba(11, 17, 33, 0.8);

  /* Primary Brand Gradient (Violet -> Blue -> Cyan) */
  --color-violet: #8B5CF6;
  --color-violet-light: #A855F7;
  --color-blue: #3B82F6;
  --color-cyan: #22D3EE;
  --color-cyan-glow: #06B6D4;
  
  --gradient-brand: linear-gradient(135deg, #8B5CF6 0%, #3B82F6 50%, #22D3EE 100%);
  --gradient-brand-subtle: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(59, 130, 246, 0.15) 50%, rgba(34, 211, 238, 0.15) 100%);
  --gradient-metallic: linear-gradient(145deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 100%);
  --gradient-card: linear-gradient(160deg, rgba(22, 31, 56, 0.75) 0%, rgba(13, 18, 34, 0.85) 100%);
  --gradient-text: linear-gradient(135deg, #FFFFFF 30%, #C084FC 70%, #22D3EE 100%);

  /* Borders & Glows */
  --border-subtle: rgba(255, 255, 255, 0.09);
  --border-metallic: rgba(139, 92, 246, 0.35);
  --border-hover: rgba(34, 211, 238, 0.6);
  --glow-violet: 0 0 25px rgba(139, 92, 246, 0.45);
  --glow-cyan: 0 0 25px rgba(34, 211, 238, 0.45);
  --glow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.7), 0 0 25px rgba(139, 92, 246, 0.18);
  --glow-card-hover: 0 20px 45px -10px rgba(0, 0, 0, 0.8), 0 0 35px rgba(34, 211, 238, 0.3);

  /* Typography */
  --font-main: 'Cairo', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  /* Layout & Geometry */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --container-width: 1240px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Base & Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: 
    radial-gradient(circle at 15% 15%, rgba(139, 92, 246, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(34, 211, 238, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(59, 130, 246, 0.12) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-dark) 35%, #0B1120 70%, var(--bg-deep) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* --- Accessibility & Focus --- */
:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

/* --- Layout Container --- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 24px;
}

/* --- Typography Utilities --- */
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-brand-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  margin-bottom: 16px;
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.2);
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow: 0 0 10px var(--color-cyan);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: 48px;
  font-weight: 500;
}

.text-center {
  text-align: center;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-align: center;
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.4);
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent 40%, rgba(255, 255, 255, 0.25) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(34, 211, 238, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.6);
}

.btn-primary:hover::after {
  transform: translateX(100%);
}

.btn-secondary {
  background: rgba(18, 26, 46, 0.8);
  border: 1px solid var(--border-metallic);
  color: var(--text-primary);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(30, 42, 74, 0.9);
  border-color: var(--color-cyan);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(34, 211, 238, 0.25);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.125rem;
}

/* --- Metallic Cards --- */
.metallic-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--glow-card);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.metallic-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
}

.metallic-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-card-hover);
  transform: translateY(-5px);
}

/* --- Navigation Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(8, 12, 22, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo-wrap {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 70%);
}

.brand-logo-wrap::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  padding: 1.5px;
  background: var(--gradient-brand);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.brand-logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.4);
}

.brand-name {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.brand-name .art-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-cyan);
  background: rgba(34, 211, 238, 0.15);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(34, 211, 238, 0.3);
}

/* Nav Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 8px 4px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: #FFFFFF;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: width var(--transition-smooth);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language Switcher Button */
.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-secondary);
  gap: 8px;
  transition: all var(--transition-fast);
}

.lang-switch-btn:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: var(--color-cyan);
  color: #FFFFFF;
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
}

.lang-switch-btn .active-lang {
  color: var(--color-cyan);
}

.lang-switch-btn .divider {
  opacity: 0.4;
}

/* Mobile Nav Toggle */
.mobile-toggle-btn {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 1100;
}

.hamburger-lines {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 24px;
  height: 18px;
}

.hamburger-lines span {
  display: block;
  height: 2px;
  width: 100%;
  background: #FFFFFF;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle-btn.active .line-1 {
  transform: rotate(45deg) translate(5px, 6px);
}
.mobile-toggle-btn.active .line-2 {
  opacity: 0;
}
.mobile-toggle-btn.active .line-3 {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  background: rgba(10, 14, 26, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-left: 1px solid var(--border-metallic);
  padding: 100px 32px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  z-index: 1050;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.7);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  list-style: none;
}

.mobile-nav-link {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-secondary);
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link.active, .mobile-nav-link:hover {
  color: var(--color-cyan);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 1040;
}

.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

/* --- Hero Section --- */
.hero-section {
  padding: clamp(60px, 10vw, 110px) 0 clamp(50px, 8vw, 90px);
  position: relative;
  text-align: center;
  overflow: hidden;
}

.hero-glow-orb {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(300px, 60vw, 650px);
  height: clamp(300px, 60vw, 650px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.22) 0%, rgba(34, 211, 238, 0.08) 50%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  animation: pulseGlow 8s ease-in-out infinite alternate;
}

@keyframes pulseGlow {
  0% { transform: translateX(-50%) scale(0.95); opacity: 0.8; }
  100% { transform: translateX(-50%) scale(1.1); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin-inline: auto;
}

/* Large Hero Logo Badge */
.hero-logo-container {
  margin-inline: auto;
  margin-bottom: 28px;
  width: 140px;
  height: 140px;
  position: relative;
  animation: floatHero 6s ease-in-out infinite alternate;
}

@keyframes floatHero {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(1deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

.hero-logo-glow {
  position: absolute;
  inset: -15px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.5) 0%, rgba(34, 211, 238, 0.25) 50%, transparent 75%);
  filter: blur(20px);
  z-index: 0;
}

.hero-logo-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
  z-index: 1;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.7), 0 0 35px rgba(139, 92, 246, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.15);
}

.hero-headline {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subhead {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: 40px;
  font-weight: 500;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Featured Showreel Preview */
.hero-showreel-wrap {
  margin-top: 40px;
  position: relative;
  max-width: 860px;
  margin-inline: auto;
}

/* --- Video Facade Component --- */
.video-facade-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000000;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border-metallic);
  box-shadow: var(--glow-card);
  cursor: pointer;
  group: hover;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.video-facade-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--glow-card-hover);
}

.video-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-bounce), filter var(--transition-smooth);
  filter: brightness(0.85);
}

.video-facade-card:hover .video-thumb {
  transform: scale(1.04);
  filter: brightness(1);
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 10, 18, 0.2) 0%, rgba(7, 10, 18, 0.7) 100%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  transition: background var(--transition-smooth);
}

.video-facade-card:hover .video-overlay {
  background: linear-gradient(180deg, rgba(7, 10, 18, 0.1) 0%, rgba(7, 10, 18, 0.5) 100%);
}

.video-badge {
  align-self: flex-start;
  padding: 6px 14px;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-cyan);
}

/* Play Button Trigger */
.play-btn-trigger {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(15, 23, 41, 0.85);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.6);
  transition: transform var(--transition-bounce), background var(--transition-fast), box-shadow var(--transition-fast);
  z-index: 2;
}

.play-btn-trigger::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: var(--gradient-brand);
  opacity: 0.6;
  z-index: -1;
  filter: blur(6px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.video-facade-card:hover .play-btn-trigger {
  transform: translate(-50%, -50%) scale(1.15);
  background: var(--gradient-brand);
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.8);
}

.video-facade-card:hover .play-btn-trigger::before {
  opacity: 1;
  transform: scale(1.3);
}

.play-icon-svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
  margin-left: 3px; /* visual center for play triangle */
}

.video-meta {
  z-index: 1;
}

.video-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.video-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Services Showcase Grid --- */
.services-section {
  padding: 80px 0;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

/* Flagship / Hero Service: 3D Cartoon Animations (Largest & Visually Prioritized) */
.service-hero-card {
  grid-column: 1 / -1;
  background: linear-gradient(145deg, rgba(28, 38, 68, 0.85) 0%, rgba(14, 20, 38, 0.95) 100%);
  border: 1.5px solid rgba(139, 92, 246, 0.5);
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.7), 0 0 35px rgba(139, 92, 246, 0.25);
  padding: clamp(28px, 4vw, 44px);
  border-radius: var(--radius-xl);
}

.service-hero-card .flagship-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-brand);
  color: #FFFFFF;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
}

.service-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.service-name {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.service-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 800px;
  margin-bottom: 32px;
}

.service-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.highlight-pill {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.highlight-pill svg {
  color: var(--color-cyan);
}

/* Dual Video Showcase per Service */
.service-videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

/* Secondary Services Grid (Logo + Product) */
.services-secondary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 32px;
  margin-top: 32px;
}

/* --- Portfolio Filter Section --- */
.portfolio-section {
  padding: 80px 0;
}

.portfolio-filter-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.filter-tab {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  background: rgba(18, 26, 46, 0.6);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  background: rgba(30, 42, 74, 0.8);
  color: #FFFFFF;
  border-color: var(--border-metallic);
}

.filter-tab.active {
  background: var(--gradient-brand);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 0 25px rgba(139, 92, 246, 0.4);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 28px;
}

.portfolio-item {
  transition: all var(--transition-smooth);
}

.portfolio-item.hidden {
  display: none;
}

/* --- Our Story / About Section --- */
.about-section {
  padding: 90px 0;
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-content h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-story-highlight {
  border-inline-start: 3px solid var(--color-cyan);
  padding-inline-start: 20px;
  margin: 28px 0;
  font-style: italic;
  font-size: 1.15rem;
  color: #FFFFFF;
}

.principles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.principle-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: rgba(18, 26, 46, 0.5);
  border: 1px solid var(--border-subtle);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.principle-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-cyan);
}

.principle-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--color-cyan);
}

.principle-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.principle-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Join Us Section & Application Form --- */
.join-section {
  padding: 90px 0;
}

.join-manifesto {
  max-width: 780px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: 50px;
}

.join-manifesto p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Form Styles */
.form-card {
  max-width: 760px;
  margin-inline: auto;
  background: var(--gradient-card);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 5vw, 50px);
  backdrop-filter: blur(20px);
  box-shadow: var(--glow-card);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.col-span-2 {
  grid-column: 1 / -1;
}

.form-label {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.form-label .required {
  color: var(--color-cyan);
  margin-inline-start: 4px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 13px 18px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: #FFFFFF;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-violet-light);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25);
  background: rgba(16, 24, 46, 0.95);
  outline: none;
}

.form-input::placeholder, .form-textarea::placeholder {
  color: var(--text-dim);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-help-text {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* --- Contact Section --- */
.contact-section {
  padding: 90px 0;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  padding: 36px;
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border-metallic);
}

.contact-channel {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.channel-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  flex-shrink: 0;
}

.channel-details h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.channel-details a, .channel-details p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Quick Home CTA Banner */
.cta-banner-section {
  padding: 60px 0 90px;
}

.cta-banner-card {
  text-align: center;
  padding: clamp(40px, 6vw, 70px) 24px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(59, 130, 246, 0.15) 50%, rgba(34, 211, 238, 0.15) 100%), var(--bg-surface);
  border: 1px solid var(--border-metallic);
  box-shadow: var(--glow-card);
  position: relative;
  overflow: hidden;
}

.cta-banner-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 100%;
  background: radial-gradient(ellipse, rgba(139, 92, 246, 0.35) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

/* --- Footer --- */
.site-footer {
  margin-top: auto;
  background: rgba(5, 7, 13, 0.95);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  position: relative;
  z-index: 10;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 320px;
  margin-top: 14px;
  line-height: 1.6;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--color-cyan);
  transform: translateX(4px);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* --- Video Cinema Modal Lightbox --- */
.video-modal {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 14, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
  z-index: 2000;
}

.video-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.video-modal-dialog {
  width: 100%;
  max-width: 960px;
  background: var(--bg-surface);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9), 0 0 40px rgba(139, 92, 246, 0.4);
  transform: scale(0.95);
  transition: transform var(--transition-bounce);
  position: relative;
}

.video-modal.active .video-modal-dialog {
  transform: scale(1);
}

.video-modal-close {
  position: absolute;
  top: -48px;
  inset-inline-end: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.video-modal-close:hover {
  background: var(--color-violet);
  transform: rotate(90deg);
}

.video-modal-iframe-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  width: 100%;
}

.video-modal-iframe-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* --- Form Submit Feedback / Toast Modal --- */
.toast-modal {
  position: fixed;
  inset: 0;
  background: rgba(3, 5, 10, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 2500;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.toast-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.toast-card {
  max-width: 460px;
  width: 100%;
  text-align: center;
  background: var(--gradient-card);
  border: 1.5px solid var(--color-cyan);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  box-shadow: 0 0 50px rgba(34, 211, 238, 0.35);
  transform: scale(0.9);
  transition: transform var(--transition-bounce);
}

.toast-modal.active .toast-card {
  transform: scale(1);
}

.toast-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.15);
  border: 2px solid var(--color-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: 20px;
  color: var(--color-cyan);
  box-shadow: 0 0 25px rgba(34, 211, 238, 0.4);
}

.toast-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.toast-message {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

/* --- Spinner Animation --- */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ==========================================================================
   RTL Layout Adjustments (for [dir="rtl"])
   ========================================================================== */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .play-icon-svg {
  margin-left: 0;
  margin-right: 3px;
  transform: scaleX(-1);
}

[dir="rtl"] .mobile-drawer {
  right: auto;
  left: 0;
  border-left: none;
  border-right: 1px solid var(--border-metallic);
  transform: translateX(-100%);
}

[dir="rtl"] .mobile-drawer.open {
  transform: translateX(0);
}

[dir="rtl"] .about-story-highlight {
  border-inline-start: 3px solid var(--color-cyan);
  border-inline-end: none;
}

[dir="rtl"] .footer-links a:hover {
  transform: translateX(-4px);
}

/* Keep LTR for numbers, video embeds, and logo images */
[dir="rtl"] .ltr-keep,
[dir="rtl"] .video-facade-card,
[dir="rtl"] .video-modal-iframe-wrap,
[dir="rtl"] .brand-logo-img,
[dir="rtl"] .hero-logo-img,
[dir="rtl"] input[type="tel"],
[dir="rtl"] input[type="email"],
[dir="rtl"] input[type="url"],
[dir="rtl"] .phone-number,
[dir="rtl"] .code-font {
  direction: ltr !important;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .about-grid, .contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .mobile-toggle-btn {
    display: block;
  }
  .services-secondary-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .principles-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .header-actions .btn-quote-desktop {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-group .btn {
    width: 100%;
  }
  .container {
    padding-inline: 16px;
  }
  .service-videos-grid {
    grid-template-columns: 1fr;
  }
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}