/* ==========================================================================
   RAWAI AL ANOUD COMPANY | شركة روائع العنود
   Architectural Interior Finishing — Riyadh, Saudi Arabia
   Minimalist Architectural Design System (Light & Dark Mode)
   Enhanced with World-Class Architectural Micro-Animations
   ========================================================================== */

:root {
  /* Exact Minimalist Architectural Palette (Light Mode - Default) */
  --bg-primary: #F7F5F0;       /* Warm architectural ivory */
  --bg-secondary: #EEEAE2;     /* Soft warm neutral */
  --surface: #FFFFFF;          /* Pure white */
  --text-primary: #171717;     /* Charcoal */
  --text-secondary: #6B6862;   /* Warm gray */
  --text-muted: #8E8A83;       /* Subtle muted gray */
  --accent: #9A7653;           /* Very subtle deep bronze */
  --accent-soft: rgba(154, 118, 83, 0.12);
  --accent-glow: rgba(154, 118, 83, 0.25);
  --border: #DDD9D1;           /* Soft neutral border */
  --border-subtle: #E8E4DC;    /* Extra soft border */
  --header-bg: rgba(247, 245, 240, 0.92);
  
  /* Intentional Dark Anchor / Footer */
  --dark-section: #1D1D1B;
  --dark-text: #F7F5F0;
  --dark-text-muted: #9C9890;
  --dark-border: rgba(221, 217, 209, 0.16);

  /* Form and Field Tokens */
  --input-bg: transparent;
  --input-border: #DDD9D1;
  --input-placeholder: #B5B1A8;

  /* Typography */
  --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Cormorant Garamond', 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-mono: 'DM Mono', 'SF Mono', Consolas, Menlo, monospace;
  --font-arabic: 'IBM Plex Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Architectural Radii (Strictly 2–4px) */
  --radius-xs: 2px;
  --radius-sm: 4px;

  /* Luxury Architectural Motion Curves */
  --ease-architectural: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-calm: 650ms var(--ease-architectural);
  --transition-slow: 950ms var(--ease-architectural);
  --transition-fast: 220ms ease;
  --theme-transition: background-color 350ms ease, color 350ms ease, border-color 350ms ease;

  /* Grid & Layout */
  --container-max: 1320px;
  --header-height: 88px;
  --header-height-scrolled: 72px;
}

/* ==========================================================================
   Dark Mode Design Tokens
   ========================================================================== */

[data-theme="dark"] {
  --bg-primary: #121211;       /* Deep warm architectural obsidian */
  --bg-secondary: #181816;     /* Soft warm dark neutral */
  --surface: #1F1F1D;          /* Refined dark elevated surface */
  --text-primary: #F7F5F0;     /* Warm architectural ivory */
  --text-secondary: #A8A49C;   /* Refined warm gray */
  --text-muted: #747067;       /* Muted dark gray */
  --accent: #C8A783;           /* Luminous warm bronze/gold */
  --accent-soft: rgba(200, 167, 131, 0.15);
  --accent-glow: rgba(200, 167, 131, 0.3);
  --border: rgba(221, 217, 209, 0.14);
  --border-subtle: rgba(221, 217, 209, 0.08);
  --header-bg: rgba(18, 18, 17, 0.92);

  --dark-section: #0B0B0A;
  --dark-text: #F7F5F0;
  --dark-text-muted: #8E8A82;
  --dark-border: rgba(221, 217, 209, 0.12);

  --input-bg: transparent;
  --input-border: rgba(221, 217, 209, 0.18);
  --input-placeholder: #68645C;
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  transition: var(--theme-transition);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-xs);
}

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

button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

input, textarea, select {
  font: inherit;
  color: inherit;
}

::selection {
  background-color: var(--accent);
  color: var(--surface);
}

/* ==========================================================================
   Reading Progress Bar (Hairline Luxury Animation)
   ========================================================================== */

.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #D4B692);
  z-index: 1001;
  pointer-events: none;
  transition: width 120ms ease-out;
}

/* ==========================================================================
   Typography & Hierarchy
   ========================================================================== */

h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.08;
  transition: color var(--transition-fast);
}

h1 {
  font-size: clamp(40px, 5.6vw, 84px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 500;
}

h2 {
  font-size: clamp(30px, 3.8vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 500;
}

h3 {
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.25;
  font-weight: 500;
}

p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
  transition: color var(--transition-fast);
}

em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

[lang="ar"],
.arabic-text {
  font-family: var(--font-arabic);
}

/* Small Architectural Eyebrow / Label (Level 5) */
.label-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.label-mono::before {
  content: '';
  display: inline-block;
  width: 18px;
  height: 1px;
  background-color: var(--accent);
  transition: width var(--transition-calm);
}

.label-mono:hover::before {
  width: 28px;
}

/* ==========================================================================
   Layout Containers & Spacers
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(24px, 5vw, 72px);
  padding-right: clamp(24px, 5vw, 72px);
}

.section-spacer {
  padding-top: clamp(100px, 12vw, 160px);
  padding-bottom: clamp(100px, 12vw, 160px);
  transition: var(--theme-transition);
}

.section-divider {
  width: 100%;
  height: 1px;
  background-color: var(--border);
  border: none;
}

/* ==========================================================================
   Scroll-Driven Reveal System (Architectural Motion)
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 800ms var(--ease-architectural), transform 800ms var(--ease-architectural);
  will-change: opacity, transform;
}

.reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger Delays */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* Subtle Scale Reveal for Images */
.reveal-scale {
  opacity: 0;
  transform: scale(0.97) translateY(24px);
  transition: opacity 900ms var(--ease-architectural), transform 900ms var(--ease-architectural);
}

.reveal-scale.is-revealed {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* Hero Intro Keyframes */
@keyframes heroFadeInUp {
  0% {
    opacity: 0;
    transform: translateY(36px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroImageReveal {
  0% {
    opacity: 0;
    transform: scale(1.04) translateY(20px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.hero-animate-in {
  animation: heroFadeInUp 1000ms var(--ease-architectural) forwards;
}

.hero-image-animate {
  animation: heroImageReveal 1200ms var(--ease-architectural) 150ms forwards;
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-scale, .hero-animate-in, .hero-image-animate {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    transition: none !important;
  }
}

/* ==========================================================================
   Buttons (Minimalist, Architectural with Subtle Feedback)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 24px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-xs);
  transition: all var(--transition-calm);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-arrow {
  display: inline-block;
  font-size: 15px;
  transition: transform var(--transition-calm);
}

.btn:hover .btn-arrow {
  transform: translateX(5px);
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--text-primary);
}

.btn-primary:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 4px 18px var(--accent-glow);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

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

.text-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: all var(--transition-calm);
}

.text-action:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.text-action .btn-arrow {
  font-size: 14px;
}

.text-action:hover .btn-arrow {
  transform: translateY(3px);
}

/* ==========================================================================
   Header & Navigation (Scrollspy & Blur)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  transition: height var(--transition-calm), background-color var(--transition-fast), border-color var(--transition-fast);
}

.site-header.is-scrolled {
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: height var(--transition-calm);
}

.site-header.is-scrolled .header-inner {
  height: var(--header-height-scrolled);
}

/* Brand Identity with User Uploaded Icon */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.brand:hover {
  transform: translateY(-1px);
}

.brand-logo-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #FFFFFF;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 3px;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  transition: all var(--transition-calm);
}

.brand:hover .brand-logo-badge {
  border-color: var(--accent);
  box-shadow: 0 2px 10px var(--accent-glow);
}

.brand-logo-badge img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

[data-theme="dark"] .brand-logo-badge {
  background-color: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 0 14px rgba(200, 167, 131, 0.25);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-arabic {
  font-family: var(--font-arabic);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2px;
}

/* Navigation Links with Active Scrollspy State */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.5vw, 36px);
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--accent);
  transition: width var(--transition-calm);
}

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

.header-right-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Switcher Toggle */
.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: rotate(15deg);
}

.theme-toggle-btn:active {
  transform: scale(0.92);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sun-icon {
  display: none;
}

.moon-icon {
  display: block;
}

[data-theme="dark"] .sun-icon {
  display: block;
}

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

.nav-cta {
  padding: 10px 18px;
  font-size: 12px;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background-color: var(--accent);
  color: #FFFFFF;
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  border-radius: var(--radius-xs);
}

.menu-toggle-line {
  width: 22px;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: transform var(--transition-calm), opacity var(--transition-fast), background-color var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

/* Mobile Navigation Overlay */
.nav-mobile-panel {
  display: none;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding-top: clamp(64px, 9vw, 120px);
  padding-bottom: clamp(80px, 11vw, 140px);
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-primary);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-eyebrow {
  margin-bottom: 24px;
}

.hero-title {
  margin-bottom: 28px;
  max-width: 620px;
}

.hero-desc {
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
}

.hero-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background-color: var(--bg-secondary);
}

.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-image-wrap:hover img {
  transform: scale(1.03);
}

.hero-caption {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.hero-caption span:last-child {
  color: var(--accent);
}

/* ==========================================================================
   Trust / Philosophy Section
   ========================================================================== */

.trust-section {
  padding-top: clamp(64px, 8vw, 96px);
  padding-bottom: clamp(64px, 8vw, 96px);
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 3.5vw, 48px);
}

.trust-item {
  display: flex;
  flex-direction: column;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  position: relative;
  transition: transform var(--transition-calm), border-color var(--transition-calm);
}

.trust-item::after {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--transition-calm);
}

.trust-item:hover::after {
  width: 100%;
}

.trust-item:hover {
  transform: translateY(-3px);
}

.trust-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.trust-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.trust-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ==========================================================================
   Services Section (Minimalist Editorial List + Architectural Preview)
   ========================================================================== */

.services-section {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-primary);
}

.services-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: clamp(48px, 6vw, 72px);
}

.services-intro-title {
  max-width: 580px;
  margin-top: 16px;
}

.services-editorial-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: start;
}

/* Service List */
.service-list {
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.service-item {
  border-bottom: 1px solid var(--border);
  padding: 32px 18px;
  display: grid;
  grid-template-columns: 48px 1fr 32px;
  gap: 20px;
  align-items: baseline;
  cursor: pointer;
  position: relative;
  border-radius: var(--radius-xs);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-calm);
}

.service-item:hover,
.service-item.is-selected {
  background-color: var(--accent-soft);
  border-bottom-color: var(--accent);
  transform: translateX(6px);
}

.service-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  transition: transform var(--transition-calm);
}

.service-item:hover .service-index,
.service-item.is-selected .service-index {
  transform: scale(1.15);
}

.service-main {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-item-title {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
  gap: 12px;
  transition: color var(--transition-fast);
}

.service-item-arabic {
  font-family: var(--font-arabic);
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
}

.service-brief {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 480px;
}

.service-arrow-wrap {
  display: flex;
  justify-content: flex-end;
  color: var(--text-muted);
  font-size: 18px;
  transition: transform var(--transition-calm), color var(--transition-fast);
}

.service-item:hover .service-arrow-wrap,
.service-item.is-selected .service-arrow-wrap {
  transform: translate(6px, -4px);
  color: var(--accent);
}

/* Services Architectural Preview Column (Desktop) */
.services-preview-panel {
  position: sticky;
  top: 120px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background-color: var(--surface);
  padding: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
  transition: all var(--transition-calm);
}

.preview-media-box {
  width: 100%;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  border-radius: var(--radius-xs);
  background-color: var(--bg-secondary);
  position: relative;
}

.preview-media-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), opacity 400ms ease, filter 400ms ease;
}

.preview-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preview-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.preview-title {
  font-size: 18px;
  font-weight: 600;
}

.preview-scope-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.preview-scope-list li {
  font-size: 12.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform var(--transition-fast);
}

.preview-scope-list li:hover {
  transform: translateX(4px);
  color: var(--text-primary);
}

.preview-scope-list li::before {
  content: '—';
  color: var(--accent);
  font-size: 11px;
}

/* ==========================================================================
   Projects / Selected Work Section
   ========================================================================== */

.projects-section {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-secondary);
}

.projects-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 36px;
}

.projects-intro-title {
  max-width: 600px;
  margin-top: 16px;
}

/* Interactive Category Filter Pills */
.project-filters {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(48px, 6vw, 72px);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding-bottom: 18px;
}

.filter-btn {
  padding: 8px 16px;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border);
}

.filter-btn.is-active {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

/* Editorial Architecture Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(48px, 6vw, 80px) clamp(24px, 3.5vw, 44px);
}

.project-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: opacity 350ms ease, transform 350ms ease;
}

.project-card.is-hidden {
  display: none !important;
}

.project-card .project-img-box {
  aspect-ratio: 16 / 10;
}

.project-card-featured {
  grid-column: 1 / -1;
}

.project-card-featured .project-img-box {
  aspect-ratio: 16 / 9;
  max-height: 580px;
}

@media (max-width: 860px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .project-card-featured {
    grid-column: auto;
  }
}

.project-img-box {
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background-color: var(--surface);
  position: relative;
}

.project-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background-color: rgba(23, 23, 23, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.18);
  z-index: 2;
  transition: background-color var(--transition-fast);
}

.project-card:hover .project-badge {
  background-color: var(--accent);
  border-color: var(--accent);
}

.project-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-img-box img {
  transform: scale(1.035);
}

.project-meta-bar {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding-top: 20px;
}

.project-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.project-titles {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.project-name {
  font-size: clamp(18px, 1.8vw, 24px);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.project-card:hover .project-name {
  color: var(--accent);
}

.project-scope {
  font-size: 13px;
  color: var(--text-secondary);
}

.project-location {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 12px;
}

.project-link-arrow {
  color: var(--text-primary);
  font-size: 15px;
  transition: transform var(--transition-calm), color var(--transition-fast);
}

.project-card:hover .project-link-arrow {
  transform: translateX(6px);
  color: var(--accent);
}

/* Asymmetrical Layouts */
.project-card-featured .project-img-box {
  aspect-ratio: 16 / 9;
  max-height: 620px;
}

.projects-dual-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.projects-dual-row .project-card:first-child .project-img-box {
  aspect-ratio: 4 / 3;
}

.projects-dual-row .project-card:last-child .project-img-box {
  aspect-ratio: 1 / 1;
}

.project-card-panorama .project-img-box {
  aspect-ratio: 21 / 9;
  max-height: 520px;
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-section {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-primary);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-img-box {
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background-color: var(--bg-secondary);
}

.about-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-img-box:hover img {
  transform: scale(1.025);
}

.about-content {
  display: flex;
  flex-direction: column;
}

.about-eyebrow {
  margin-bottom: 20px;
}

.about-title {
  margin-bottom: 28px;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 44px;
}

.about-text p {
  font-size: 15px;
  line-height: 1.8;
}

/* About 4 Pillars List */
.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 36px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.about-pillar-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform var(--transition-fast);
}

.about-pillar-item:hover {
  transform: translateY(-2px);
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.pillar-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.pillar-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ==========================================================================
   Saudi Vision 2030 Section
   ========================================================================== */

.vision-section {
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
}

.vision-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: start;
}

.vision-intro {
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 120px;
}

.vision-eyebrow {
  margin-bottom: 20px;
}

.vision-title {
  margin-bottom: 24px;
}

.vision-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.vision-external-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
  width: fit-content;
  transition: all var(--transition-fast);
}

.vision-external-link:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
  transform: translateX(3px);
}

/* Vision 4 Strategic Rows */
.vision-rows {
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.vision-row-item {
  border-bottom: 1px solid var(--border);
  padding: 32px 14px;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 24px;
  align-items: baseline;
  transition: background-color var(--transition-fast), transform var(--transition-calm);
  border-radius: var(--radius-xs);
}

.vision-row-item:hover {
  background-color: var(--accent-soft);
  transform: translateX(4px);
}

.vision-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.vision-row-main {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vision-row-title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.vision-row-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ==========================================================================
   Contact Section (Architectural Studio Inquiry)
   ========================================================================== */

.contact-section {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-primary);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: start;
}

.contact-details {
  display: flex;
  flex-direction: column;
}

.contact-eyebrow {
  margin-bottom: 20px;
}

.contact-title {
  margin-bottom: 28px;
  max-width: 440px;
}

.contact-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 44px;
  max-width: 440px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.contact-info-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform var(--transition-fast);
}

.contact-info-group:hover {
  transform: translateX(3px);
}

.contact-info-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.contact-info-val {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.contact-info-val a:hover {
  color: var(--accent);
}

/* Inquiry Form */
.inquiry-form-wrap {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: clamp(32px, 4vw, 56px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.03);
  transition: var(--theme-transition), box-shadow var(--transition-calm);
}

.inquiry-form-wrap:hover {
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.06);
}

.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.form-field label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.form-field:focus-within label {
  color: var(--accent);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--input-bg);
  border: none;
  border-bottom: 1.5px solid var(--input-border);
  border-radius: 0;
  padding: 10px 0;
  font-size: 14.5px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.form-select option {
  background-color: var(--surface);
  color: var(--text-primary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-bottom-color: var(--accent);
}

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

.form-textarea {
  min-height: 84px;
  resize: vertical;
}

/* Service Options Interactive Chips */
.form-services-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
}

.form-services-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

.form-checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13.5px;
  color: var(--text-secondary);
  user-select: none;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.checkbox-item:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.checkbox-item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  background-color: transparent;
  cursor: pointer;
  position: relative;
  display: grid;
  place-content: center;
  transition: all var(--transition-fast);
}

.checkbox-item input[type="checkbox"]:checked {
  background-color: var(--accent);
  border-color: var(--accent);
}

.checkbox-item:has(input[type="checkbox"]:checked) {
  border-color: var(--accent);
  background-color: var(--accent-soft);
  color: var(--text-primary);
}

.checkbox-item input[type="checkbox"]:checked::after {
  content: '';
  width: 8px;
  height: 4px;
  border-left: 1.5px solid #FFFFFF;
  border-bottom: 1.5px solid #FFFFFF;
  transform: rotate(-45deg) translate(1px, -1px);
}

.form-submit-row {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-status {
  min-height: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  transition: opacity var(--transition-fast);
}

/* ==========================================================================
   Floating Back to Top Button
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-xs);
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  z-index: 90;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-calm);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--dark-section);
  color: var(--dark-text);
  padding-top: clamp(80px, 10vw, 120px);
  padding-bottom: 48px;
  transition: background-color var(--transition-fast);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(64px, 8vw, 96px);
  border-bottom: 1px solid var(--dark-border);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.footer-brand .brand-title {
  color: var(--dark-text);
}

.footer-brand .brand-arabic {
  color: var(--accent);
}

.footer-brand .brand-subtitle {
  color: var(--dark-text-muted);
}

.footer-about-text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--dark-text-muted);
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dark-text-muted);
  margin-bottom: 24px;
}

.footer-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link-list a {
  font-size: 13.5px;
  color: var(--dark-text);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link-list a:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dark-text-muted);
}

.footer-contact-val {
  font-size: 13.5px;
  color: var(--dark-text);
}

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

.footer-bottom {
  padding-top: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--dark-text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-cr {
  color: var(--dark-text);
  font-weight: 500;
}

/* ==========================================================================
   Responsive Breakpoints & Mobile Architecture
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    max-width: 600px;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-editorial-layout {
    grid-template-columns: 1fr;
  }

  .services-preview-panel {
    display: none; /* Mobile/tablet relies on accordion */
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual {
    max-width: 520px;
  }

  .vision-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .vision-intro {
    position: static;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 72px;
    --header-height-scrolled: 64px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }

  /* Header & Mobile Drawer */
  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-mobile-panel {
    display: block;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 36px clamp(24px, 6vw, 36px);
    overflow-y: auto;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--transition-calm), opacity 300ms ease, visibility 300ms ease;
    z-index: 99;
  }

  .nav-mobile-panel.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .mobile-link-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 36px;
  }

  .mobile-link {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .mobile-link-arrow {
    color: var(--accent);
    font-size: 18px;
  }

  .mobile-actions-wrap {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .mobile-theme-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
  }

  .mobile-cta-btn {
    width: 100%;
    justify-content: center;
    padding: 16px 24px;
  }

  /* Hero */
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: space-between;
  }

  /* Projects */
  .projects-dual-row {
    grid-template-columns: 1fr;
    gap: clamp(48px, 6vw, 64px);
  }

  .project-meta-bar {
    grid-template-columns: 36px 1fr auto;
    gap: 16px;
  }

  /* Trust */
  .trust-grid {
    grid-template-columns: 1fr;
  }

  /* Services */
  .service-item {
    grid-template-columns: 36px 1fr 24px;
    padding: 24px 0;
  }

  .service-accordion-content {
    display: none;
    padding-top: 16px;
    margin-top: 8px;
    border-top: 1px solid var(--border-subtle);
  }

  .service-item.is-selected .service-accordion-content {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .service-accordion-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: var(--radius-xs);
    overflow: hidden;
  }

  .service-accordion-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* About */
  .about-pillars {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Vision */
  .vision-row-item {
    grid-template-columns: 36px 1fr;
    gap: 16px;
  }

  /* Form */
  .form-group-row {
    grid-template-columns: 1fr;
  }

  .form-checkbox-grid {
    grid-template-columns: 1fr;
  }

  .inquiry-form-wrap {
    padding: 24px;
  }

  /* Footer */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}