/* ============================================================
   ProBuildSites — Design System
   Premium dark theme · Glassmorphism · Micro-animations · RTL
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Core palette */
  --color-bg:          #0a0e1a;
  --color-bg-alt:      #0f1424;
  --color-surface:     #141a2e;
  --color-surface-alt: #1a2138;
  --color-border:      rgba(255,255,255,0.06);
  --color-border-hover:rgba(255,255,255,0.12);

  /* Brand */
  --color-primary:     #00d4aa;
  --color-primary-rgb: 0,212,170;
  --color-primary-hover:#00f0c0;
  --color-accent:      #f5a623;
  --color-accent-rgb:  245,166,35;

  /* Semantic */
  --color-success:     #10b981;
  --color-warning:     #f59e0b;
  --color-error:       #ef4444;
  --color-info:        #3b82f6;

  /* Text */
  --color-text:        #e8ecf0;
  --color-text-muted:  #8892a4;
  --color-text-dim:    #5a6478;
  --color-heading:     #ffffff;

  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body:    'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Radius */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.25);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.35);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.45);
  --shadow-glow:0 0 30px rgba(var(--color-primary-rgb),0.15);

  /* Glass */
  --glass-bg:      rgba(20,26,46,0.65);
  --glass-border:  rgba(255,255,255,0.08);
  --glass-blur:    16px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-med:  300ms;
  --duration-slow: 500ms;

  /* Layout */
  --content-max: 1200px;
  --content-narrow: 800px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--color-primary-hover); }

ul, ol { list-style: none; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
}
h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.35rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
p  { margin-bottom: var(--space-md); }

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted { color: var(--color-text-muted); }
.text-dim   { color: var(--color-text-dim); }
.text-center { text-align: center; }
.text-sm     { font-size: 0.875rem; }
.text-xs     { font-size: 0.75rem; }
.text-lg     { font-size: 1.125rem; }
.text-xl     { font-size: 1.25rem; }

.label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.label-primary {
  background: rgba(var(--color-primary-rgb),0.12);
  color: var(--color-primary);
}
.label-accent {
  background: rgba(var(--color-accent-rgb),0.12);
  color: var(--color-accent);
}

/* ---------- Layout ---------- */
.container {
  width: min(var(--content-max), calc(100% - var(--space-xl) * 2));
  margin-inline: auto;
}

.container-narrow {
  width: min(var(--content-narrow), calc(100% - var(--space-xl) * 2));
  margin-inline: auto;
}

.section {
  padding: var(--space-4xl) 0;
}

.section-sm {
  padding: var(--space-3xl) 0;
}

.section,
.section-sm,
.hero,
.stats-bar {
  scroll-margin-top: calc(var(--header-height) + var(--space-md));
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.flex-wrap   { flex-wrap: wrap; }
.items-center{ align-items: center; }
.justify-center { justify-content: center; }
.justify-between{ justify-content: space-between; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: background var(--duration-med) var(--ease-out),
              box-shadow var(--duration-med) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(10,14,26,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.35rem;
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 900;
  color: var(--color-bg);
}

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

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  inset-inline-start: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration-med) var(--ease-out);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-heading);
}

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

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}
.lang-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-heading);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--duration-med) var(--ease-out);
  z-index: 100;
  overflow: hidden;
}

.lang-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  text-align: start;
}
.lang-option:hover {
  background: rgba(var(--color-primary-rgb),0.08);
  color: var(--color-heading);
}
.lang-option.active {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb),0.06);
}

/* Mobile Menu */
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease-out);
}
.mobile-toggle:hover { background: rgba(255,255,255,0.05); }

.hamburger {
  width: 22px;
  height: 16px;
  position: relative;
}
.hamburger span {
  position: absolute;
  inset-inline-start: 0;
  width: 100%;
  height: 2px;
  background: var(--color-heading);
  border-radius: 2px;
  transition: all var(--duration-med) var(--ease-out);
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 7px; }
.hamburger span:nth-child(3) { top: 14px; }

.mobile-toggle.active .hamburger span:nth-child(1) {
  top: 7px; transform: rotate(45deg);
}
.mobile-toggle.active .hamburger span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active .hamburger span:nth-child(3) {
  top: 7px; transform: rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  top: var(--header-height);
  inset-inline: 0;
  bottom: 0;
  background: rgba(10,14,26,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
  gap: var(--space-md);
  transform: translateX(100%);
  transition: transform var(--duration-med) var(--ease-out);
  z-index: 999;
  overflow-y: auto;
}

[dir="rtl"] .mobile-nav {
  transform: translateX(-100%);
}

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

.mobile-nav a {
  display: block;
  padding: var(--space-md);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}
.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-heading);
  background: rgba(var(--color-primary-rgb),0.06);
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-med) var(--ease-out);
}

.glass-card:hover {
  border-color: rgba(var(--color-primary-rgb),0.2);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-med) var(--ease-out);
}

.card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.card-icon-primary {
  background: rgba(var(--color-primary-rgb),0.1);
  color: var(--color-primary);
}

.card-icon-accent {
  background: rgba(var(--color-accent-rgb),0.1);
  color: var(--color-accent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-med) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #00b894);
  color: var(--color-bg);
  box-shadow: 0 4px 16px rgba(var(--color-primary-rgb),0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(var(--color-primary-rgb),0.4);
  color: var(--color-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-heading);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb),0.05);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), #e89e1d);
  color: var(--color-bg);
  box-shadow: 0 4px 16px rgba(var(--color-accent-rgb),0.3);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(var(--color-accent-rgb),0.4);
  color: var(--color-bg);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 8px 16px;
}
.btn-ghost:hover {
  background: rgba(var(--color-primary-rgb),0.08);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(var(--color-primary-rgb),0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 50%, rgba(var(--color-accent-rgb),0.08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 30% at 20% 80%, rgba(59,130,246,0.06) 0%, transparent 50%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: -50%;
  inset-inline-start: -25%;
  width: 150%;
  height: 150%;
  background: conic-gradient(from 180deg at 50% 50%, transparent 0deg, rgba(var(--color-primary-rgb),0.03) 120deg, transparent 240deg);
  animation: heroRotate 30s linear infinite;
}

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

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-content h1 {
  margin-bottom: var(--space-lg);
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: var(--space-xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-3xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

/* ---------- Stats Bar ---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-heading);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* ---------- Section Headers ---------- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

.section-header .label {
  margin-bottom: var(--space-md);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ---------- Feature Grid ---------- */
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-med) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: start;
  transition: transform var(--duration-med) var(--ease-out);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  border-color: rgba(var(--color-primary-rgb),0.15);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin-bottom: var(--space-md);
}

.feature-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-primary);
}

.feature-card .card-link svg,
.feature-card .card-link::after {
  transition: transform var(--duration-fast) var(--ease-out);
}

.feature-card:hover .card-link::after {
  transform: translateX(4px);
}

/* ---------- Tool Card ---------- */
.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: all var(--duration-med) var(--ease-out);
  text-decoration: none;
  color: inherit;
}

.tool-card:hover {
  border-color: rgba(var(--color-primary-rgb),0.2);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  color: inherit;
}

.tool-card .tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb),0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.tool-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
}

.tool-card p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 0;
  line-height: 1.5;
}

.tool-card .tool-tag {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(var(--color-primary-rgb),0.08);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  align-self: flex-start;
}

/* ---------- Process Steps ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  inset-inline-start: 15%;
  width: 70%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-primary);
  margin: 0 auto var(--space-lg);
  transition: all var(--duration-med) var(--ease-out);
}

.process-step:hover .step-number {
  border-color: var(--color-primary);
  box-shadow: 0 0 24px rgba(var(--color-primary-rgb),0.2);
  background: rgba(var(--color-primary-rgb),0.08);
}

.process-step h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-sm);
}

.process-step p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(var(--color-primary-rgb),0.06), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(var(--color-accent-rgb),0.06), transparent 50%);
}

.cta-section h2 {
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-section p {
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto var(--space-xl);
  position: relative;
}

.cta-section .btn {
  position: relative;
}

/* ---------- Form Elements ---------- */
.form-group {
  display: grid;
  gap: var(--space-sm);
}

.form-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-heading);
  font-size: 0.95rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb),0.1);
}

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

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

.form-select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238892a4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-inline-end: 36px;
}

[dir="rtl"] .form-select {
  background-position: left 14px center;
}

/* ---------- Tool Panel ---------- */
.tool-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.tool-panel .tool-heading {
  margin-bottom: var(--space-lg);
}

.tool-result {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb),0.06);
  border: 1px solid rgba(var(--color-primary-rgb),0.15);
  color: var(--color-heading);
  font-weight: 700;
}

.control-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.field {
  display: grid;
  gap: var(--space-xs);
}

.field span {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

/* ---------- FAQ / Accordion ---------- */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  background: var(--color-surface);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.faq-item:hover {
  border-color: var(--color-border-hover);
}

.faq-item summary {
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  font-weight: 700;
  color: var(--color-heading);
  font-size: 0.95rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 var(--space-lg) var(--space-md);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  max-width: 280px;
}

.footer-brand p {
  margin-top: var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.footer-col a {
  display: block;
  padding: var(--space-xs) 0;
  color: var(--color-text-dim);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-out);
}
.footer-col a:hover {
  color: var(--color-heading);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.footer-bottom a {
  color: var(--color-text-dim);
}
.footer-bottom a:hover {
  color: var(--color-primary);
}

/* Newsletter */
.newsletter-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.newsletter-form input {
  flex: 1;
  min-height: 44px;
  padding: 10px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-heading);
  font-size: 0.9rem;
}

.newsletter-form input:focus {
  border-color: var(--color-primary);
}

.newsletter-form button {
  min-height: 44px;
  padding: 10px 20px;
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.newsletter-form button:hover {
  background: var(--color-primary-hover);
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

[dir="rtl"] .reveal-left  { transform: translateX(30px); }
[dir="rtl"] .reveal-right { transform: translateX(-30px); }
[dir="rtl"] .reveal-left.visible,
[dir="rtl"] .reveal-right.visible { transform: translateX(0); }

.stagger > * {
  transition-delay: calc(var(--i, 0) * 80ms);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
  font-weight: 600;
}
.breadcrumb a:hover { color: var(--color-primary); }

.breadcrumb-sep {
  color: var(--color-text-dim);
  font-size: 0.7rem;
}

/* ---------- Content Styles ---------- */
.content-body h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.content-body h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.content-body p {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.content-body ul,
.content-body ol {
  margin-bottom: var(--space-md);
  padding-inline-start: var(--space-lg);
}

.content-body ul { list-style: disc; }
.content-body ol { list-style: decimal; }

.content-body li {
  padding: var(--space-xs) 0;
  color: var(--color-text);
}

.check-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-sm);
}

.content-body .check-list {
  list-style: none;
  padding: 0;
}

.check-list li {
  padding-inline-start: 30px;
  position: relative;
  color: var(--color-text);
}

.check-list li::before {
  content: '✓';
  position: absolute;
  inset-inline-start: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(var(--color-primary-rgb),0.1);
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Related Links Grid */
.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

.link-grid a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-heading);
  font-weight: 700;
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.link-grid a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 14px 16px;
  text-align: start;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-surface);
  color: var(--color-heading);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

tr:last-child td { border-bottom: 0; }

tr:hover td {
  background: rgba(var(--color-primary-rgb),0.02);
}

/* Bar Charts */
.mini-bars {
  display: grid;
  gap: 10px;
}

.bar-row {
  display: grid;
  grid-template-columns: 140px 1fr 90px;
  gap: 10px;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-heading);
}

.bar-track {
  height: 14px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--duration-slow) var(--ease-out);
}

/* Progress */
.progress {
  height: 8px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width var(--duration-med) var(--ease-out);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

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

  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }

  .nav-links { display: none; }
  .lang-switcher.desktop { display: none; }
  .mobile-toggle { display: flex; }

  .section { padding: var(--space-3xl) 0; }
  .section-sm { padding: var(--space-2xl) 0; }

  .hero { min-height: auto; padding-top: calc(var(--header-height) + var(--space-2xl)); padding-bottom: var(--space-2xl); }
  .hero-content h1 { font-size: 2rem; }
  .hero-content p { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-number { font-size: 1.8rem; }

  .process-grid { grid-template-columns: 1fr; }
  .process-grid::before { display: none; }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  .control-row { grid-template-columns: 1fr; }

  .cta-section { padding: var(--space-2xl) var(--space-lg); }

  .bar-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .newsletter-form { flex-direction: column; }
  .stats-bar { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
}

/* ---------- Print ---------- */
@media print {
  .site-header,
  .site-footer,
  .mobile-nav,
  .cta-section,
  .newsletter-form { display: none !important; }

  body { background: #fff; color: #333; }
  .container { width: 100%; max-width: 100%; }
  .tool-panel { border: 1px solid #ddd; }
  .glass-card, .card { background: #fff; border: 1px solid #ddd; }
}