/* =========================================================================
   Fynx Forge - Premium Global Styles
   ========================================================================= */

:root {
  /* Rich Dark Mode Palette */
  --c-ink: #0B0A10;          /* Deeper black for background */
  --c-ink-2: rgba(28, 28, 42, 0.4); /* Glass background base */
  --c-ink-3: rgba(44, 44, 61, 0.5); /* Lighter glass */
  --c-ink-4: #3A3A4D;
  --c-paper: #F8F5F0;
  --c-paper-2: #EAE6DF;
  
  --c-orange: #E8750A;
  --c-orange-2: #FF8B25;
  --c-orange-soft: rgba(232, 117, 10, 0.12);
  
  /* Shared Case Study Accents */
  --c-teal: #0D9488;
  --c-lavender: #B8A7E8;
  --c-calm: #7A8FE8;
  --c-sand: #EDE7DD;
  --c-gold: #C9A961;
  --c-green: #0F3D23;

  /* Theme Mapping */
  --bg: var(--c-ink);
  --bg-elev: var(--c-ink-2);
  --bg-elev-2: var(--c-ink-3);
  --line: rgba(255, 255, 255, 0.06);
  --line-strong: rgba(255, 255, 255, 0.12);
  --line-glow: rgba(255, 255, 255, 0.2);
  
  --fg: #F4F3EF;
  --fg-mute: #A09FA8;
  --fg-dim: #706F7D;

  /* Typography */
  --f-display: "Bebas Neue", "Barlow Condensed", system-ui, sans-serif;
  --f-head: "Barlow Condensed", system-ui, sans-serif;
  --f-body: "Inter", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Sizing & Radii */
  --r-sm: 8px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  --shadow-sm: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-md: 0 12px 32px rgba(0,0,0,0.4);
  --shadow-orange: 0 16px 48px rgba(232,117,10,0.25);

  --maxw: 1240px;
  --gut: clamp(20px, 4vw, 48px);
}

[data-theme="light"] {
  --bg: var(--c-paper);
  --bg-elev: rgba(255, 255, 255, 0.6);
  --bg-elev-2: rgba(255, 255, 255, 0.9);
  --line: rgba(28,28,42,0.06);
  --line-strong: rgba(28,28,42,0.15);
  --line-glow: rgba(28,28,42,0.25);
  --fg: #1C1C2A;
  --fg-mute: #5A5A68;
  --fg-dim: #8A8A95;
}

/* Page specific max-width overrides */
body[data-page="advicebuddy_case_study"],
body[data-page="kryticalstyle_case_study"],
body[data-page="saudization_meter_case_study"] {
  --maxw: 1080px;
}

/* Base Styles */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--f-body);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color .4s ease, color .4s ease;
  position: relative;
}

/* Ambient Background Mesh */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 15% 50%, rgba(232, 117, 10, 0.05), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(184, 167, 232, 0.03), transparent 40%);
  pointer-events: none;
  z-index: -1;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--c-orange); color: #fff; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gut); }

/* Typography Helpers */
h1, h2, h3, h4 { font-family: var(--f-head); font-weight: 600; letter-spacing: -0.01em; line-height: 1.05; margin: 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-mono);
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--c-orange); }

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-elev);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  border-radius: var(--r-md);
  position: relative;
  overflow: hidden;
  transition: border-color .4s ease, transform .4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow .4s ease, background .4s ease;
}

.glass-card:hover {
  border-color: var(--line-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: color-mix(in oklab, var(--bg-elev) 80%, rgba(255,255,255,0.05));
}

/* Nav Bar */
.nav, .topbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  background: color-mix(in oklab, var(--bg) 65%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background-color .3s ease, padding .3s ease;
}
.nav.scrolled, .topbar { border-bottom-color: var(--line); }
.nav-inner, .topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark { width: 36px; height: 36px; object-fit: contain; }
.light-logo { margin-top: 4px; }
html[data-theme="light"] .dark-logo { display: none !important; }
html[data-theme="dark"] .light-logo { display: none !important; }
.brand-text { font-family: var(--f-display); font-size: 22px; letter-spacing: 0.14em; line-height: 1; }
.brand-text .b1 { color: var(--fg); }
.brand-text .b2 { color: var(--c-orange); }

.nav-links { display: flex; gap: 4px; margin-left: 24px; }
.nav-links a {
  padding: 8px 14px; border-radius: 8px;
  font-size: 14px; color: var(--fg-mute); font-weight: 500;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--fg); background: var(--line); }

.nav-tools { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 38px; height: 38px; display: inline-grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--line); color: var(--fg-mute);
  transition: all .3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.05em;
  background: transparent;
}
.icon-btn:hover { color: var(--fg); border-color: var(--line-glow); background: var(--line); transform: scale(1.05); }
.icon-btn svg { width: 16px; height: 16px; }
.lang-btn { width: auto; padding: 0 14px; border-radius: 999px; }

.topbar a.back {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fg-mute); transition: color .2s ease;
}
.topbar a.back:hover { color: var(--c-orange); }

.nav-toggle { display: none; }
@media (max-width: 960px) {
  .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 12px var(--gut) 24px;
    background: var(--bg); border-bottom: 1px solid var(--line); margin: 0; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 12px; border-radius: 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-toggle { display: inline-grid; }
  .btn-nav-cta { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 24px;
  font-family: var(--f-body); font-weight: 500; font-size: 14px;
  border-radius: 999px; border: 1px solid transparent;
  transition: all .3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  white-space: nowrap; cursor: pointer;
}
.btn .icon { width: 16px; height: 16px; transition: transform .3s ease; }
.btn:hover .icon { transform: translateX(4px); }

.btn-primary { 
  background: linear-gradient(135deg, var(--c-orange), var(--c-orange-2)); 
  color: #fff; 
  box-shadow: 0 4px 14px rgba(232,117,10,0.3);
}
.btn-primary:hover { 
  transform: translateY(-2px); 
  box-shadow: 0 6px 20px rgba(232,117,10,0.4);
}

.btn-ghost { 
  border-color: var(--line-strong); 
  color: var(--fg); 
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { 
  background: var(--bg-elev); 
  border-color: var(--c-orange); 
  color: var(--c-orange); 
  transform: translateY(-2px);
}
.btn-sm { padding: 10px 18px; font-size: 13px; }

/* Reveal Animations */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s cubic-bezier(0.16, 1, 0.3, 1), transform .9s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal.d1 { transition-delay: .1s; }
.reveal.d2 { transition-delay: .2s; }
.reveal.d3 { transition-delay: .3s; }
.reveal.d4 { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.in { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* Footer */
footer.foot, footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 32px;
  background: color-mix(in oklab, var(--bg) 95%, transparent);
}
.foot-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 48px;
}
.foot-brand p { color: var(--fg-mute); margin: 12px 0 0; font-size: 14px; max-width: 36ch; }
.foot-col h5 { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-dim); margin: 0 0 16px; font-weight: 500; }
.foot-col a { display: block; padding: 6px 0; color: var(--fg-mute); font-size: 14px; transition: color .2s; }
.foot-col a:hover { color: var(--c-orange); }
.foot-bottom, footer .row {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-family: var(--f-mono); font-size: 11px; color: var(--fg-dim); letter-spacing: 0.1em; text-transform: uppercase;
}
.socials { display: flex; gap: 8px; }
.socials a { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line); color: var(--fg-mute); transition: all .3s; }
.socials a:hover { color: var(--c-orange); border-color: var(--c-orange); background: var(--line); transform: translateY(-2px); }
.socials svg { width: 16px; height: 16px; }

@media (max-width: 860px) { .foot-top { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 520px) { .foot-bottom, footer .row { flex-direction: column; gap: 16px; align-items: flex-start; } }

/* RTL / Lang Support */
html[lang="ar"] body { font-family: 'Cairo', system-ui, sans-serif; }
html[lang="ar"] .section-title, html[lang="ar"] h1, html[lang="ar"] h2, html[lang="ar"] h3, html[lang="ar"] h4, html[lang="ar"] .case-title, html[lang="ar"] h6 { font-family: 'Cairo', sans-serif; letter-spacing: 0; }
html[dir="rtl"] .btn .icon { transform: scaleX(-1); }
html[dir="rtl"] .btn:hover .icon { transform: scaleX(-1) translateX(-3px); }
html[dir="rtl"] [data-lucide^="arrow-"] { transform: scaleX(-1); }
html[dir="rtl"] .topbar a.back svg { transform: scaleX(-1); }