/* ==========================================================================
   AK TAHSILAT — DESIGN SYSTEM  (Warm & Corporate edition)
   Light-only. Cream backgrounds, big rounded cards, soft warm shadows.
   Type: Fraunces (warm serif display) + Plus Jakarta Sans (humanist body).
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Brand red (from the AK logo) */
  --red-50:  #FEF2F1;
  --red-100: #FCE4E1;
  --red-200: #F8C8C3;
  --red-300: #F19C95;
  --red-400: #E85C55;
  --red-500: #E12E29;
  --red-600: #DE1B22;
  --red-700: #BC161D;
  --red-800: #99161C;
  --red-900: #7E171B;

  /* Warm neutral "sand" scale */
  --sand-25:  #FDFBF8;
  --sand-50:  #FBF7F1;
  --sand-100: #F6EFE6;
  --sand-200: #EFE5D8;
  --sand-300: #E4D7C6;
  --sand-400: #CBBBA4;
  --sand-500: #A99A85;
  --sand-600: #857767;
  --sand-700: #61554A;
  --sand-800: #3E362E;
  --sand-900: #292219;

  /* Warm secondary accent (clay / terracotta) — used sparingly */
  --clay-500: #C6653D;
  --clay-soft: #FAE9DD;

  /* Semantic — single warm light theme */
  --bg:            #FBF7F1;
  --bg-subtle:     #F5EDE1;
  --bg-warm:       #F0E7D8;
  --surface:       #FFFFFF;
  --surface-2:     #FDFBF7;
  --surface-tint:  #FCF7F0;

  --border:        #ECE2D3;
  --border-strong: #E0D3BF;

  --text:        #29211B;   /* warm near-black for headings */
  --text-2:      #5C5147;   /* body */
  --text-muted:  #8C8175;   /* captions */
  --text-inverse:#FFF8F0;

  --brand:          var(--red-600);
  --brand-strong:   var(--red-700);
  --brand-contrast: #FFFFFF;
  --brand-soft:     #FCEAE6;
  --brand-glow:     rgba(222, 27, 34, 0.24);

  --accent:      var(--clay-500);
  --accent-soft: var(--clay-soft);
  --success:     #3E9E6B;
  --success-soft:#E4F2E9;

  --ring: rgba(222, 27, 34, 0.28);

  /* Soft, warm-tinted shadows (brown base, high blur, low opacity) */
  --shadow-xs: 0 1px 2px rgba(74, 54, 40, 0.06);
  --shadow-sm: 0 3px 10px -3px rgba(74, 54, 40, 0.10);
  --shadow-md: 0 14px 32px -12px rgba(74, 54, 40, 0.16), 0 3px 8px -4px rgba(74, 54, 40, 0.08);
  --shadow-lg: 0 34px 64px -22px rgba(74, 54, 40, 0.22), 0 10px 24px -14px rgba(74, 54, 40, 0.12);
  --shadow-xl: 0 56px 100px -34px rgba(58, 40, 28, 0.28);
  --shadow-brand: 0 18px 40px -14px rgba(222, 27, 34, 0.36);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.7);

  /* Typography — display matches the logo's geometric sans (Montserrat) */
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Montserrat", "Plus Jakarta Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --fs-display: clamp(2.9rem, 1.7rem + 5vw, 5.6rem);
  --fs-h1: clamp(2.3rem, 1.6rem + 3vw, 3.9rem);
  --fs-h2: clamp(1.9rem, 1.35rem + 2.2vw, 3rem);
  --fs-h3: clamp(1.4rem, 1.15rem + 1vw, 1.85rem);
  --fs-h4: clamp(1.15rem, 1.02rem + 0.5vw, 1.32rem);
  --fs-lead: clamp(1.1rem, 1rem + 0.55vw, 1.35rem);
  --fs-body: 1.0625rem;
  --fs-sm: 0.9375rem;
  --fs-xs: 0.8125rem;
  --fs-eyebrow: 0.8rem;

  --lh-tight: 1.02;
  --lh-snug: 1.12;
  --lh-normal: 1.62;
  --tracking-tight: -0.02em;
  --tracking-snug: -0.01em;
  --tracking-eyebrow: 0.18em;

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.5rem; --space-6: 2rem; --space-7: 2.5rem; --space-8: 3rem;
  --space-10: 4rem; --space-12: 5rem; --space-16: 7rem; --space-20: 9rem;

  /* Radii — big & rounded */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 24px;
  --r-xl: 30px;
  --r-2xl: 40px;
  --r-pill: 999px;

  /* Layout */
  --container: 1200px;
  --container-wide: 1320px;
  --gutter: clamp(1.25rem, 4vw, 2.75rem);
  --header-h: 84px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 160ms;
  --dur: 300ms;
  --dur-slow: 620ms;

  --z-header: 100; --z-menu: 120; --z-overlay: 200; --z-modal: 300; --z-toast: 400;

  color-scheme: light;
}

/* --------------------------------------------------------------------------
   2. RESET
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  tab-size: 4;
}
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--text-2);
  background-color: var(--bg);
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, picture, svg, video, canvas { display: block; max-width: 100%; height: auto; }
svg:not([fill]) { fill: currentColor; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-snug);
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}
p { text-wrap: pretty; }
ul, ol { list-style: none; padding: 0; }

::selection { background: var(--brand); color: #fff; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 6px; }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--bg-subtle); }
::-webkit-scrollbar-thumb { background: var(--sand-300); border-radius: 999px; border: 3px solid var(--bg-subtle); }
::-webkit-scrollbar-thumb:hover { background: var(--sand-400); }

/* --------------------------------------------------------------------------
   3. LAYOUT PRIMITIVES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: 760px; }

.section { position: relative; padding-block: clamp(4.5rem, 3rem + 7vw, 9rem); }
.section--tight { padding-block: clamp(3rem, 2rem + 4vw, 5.5rem); }
.section--flush-top { padding-top: clamp(1.5rem, 3vw, 3rem); }
.section-alt { background: var(--bg-subtle); }
.section-warm { background: var(--bg-warm); }

.grid { display: grid; gap: var(--gap, 1.5rem); }

/* --------------------------------------------------------------------------
   4. TYPOGRAPHY PRIMITIVES
   -------------------------------------------------------------------------- */
.display { font-size: var(--fs-display); line-height: 1.06; letter-spacing: -0.03em; font-weight: 800; }
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 { font-size: var(--fs-h3); }
.h4 { font-size: var(--fs-h4); font-family: var(--font-sans); font-weight: 700; letter-spacing: -0.01em; }
.lead { font-size: var(--fs-lead); line-height: 1.55; color: var(--text-2); font-weight: 400; }
.muted { color: var(--text-muted); }
.text-2 { color: var(--text-2); }
.text-sm { font-size: var(--fs-sm); }
.text-balance { text-wrap: balance; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.45rem 0.95rem;
  font-family: var(--font-sans);
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: var(--r-pill);
}
.eyebrow svg { color: var(--brand); }
.eyebrow--plain { background: transparent; padding: 0; letter-spacing: var(--tracking-eyebrow); }

.text-brand { color: var(--brand); }
.text-accent { color: var(--accent); }
.text-em { color: var(--brand); font-weight: 800; }

/* --------------------------------------------------------------------------
   5. UTILITIES
   -------------------------------------------------------------------------- */
.u-center { text-align: center; }
.u-mx-auto { margin-inline: auto; }
.u-relative { position: relative; }
.u-hidden { display: none !important; }
.u-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.u-maxw-xs { max-width: 34ch; }
.u-maxw-sm { max-width: 46ch; }
.u-maxw-md { max-width: 56ch; }
.u-maxw-lg { max-width: 66ch; }
.u-flex { display: flex; }
.u-items-center { align-items: center; }
.u-gap-2 { gap: var(--space-2); }
.u-gap-3 { gap: var(--space-3); }
.u-wrap { flex-wrap: wrap; }
.divider { height: 1px; background: var(--border); border: 0; }

/* Soft decorative blobs (replace the old grid/glass motif) */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}
.blob--brand { background: radial-gradient(circle, var(--brand-glow), transparent 70%); }
.blob--clay { background: radial-gradient(circle, rgba(198, 101, 61, 0.20), transparent 70%); }
.blob--sand { background: radial-gradient(circle, rgba(228, 215, 198, 0.9), transparent 70%); }

.bg-soft-dots {
  background-image: radial-gradient(rgba(94, 74, 54, 0.06) 1.4px, transparent 1.4px);
  background-size: 28px 28px;
}

/* Warm gradient-mesh backgrounds (organic depth instead of flat fills) */
.mesh-warm {
  background-color: var(--bg);
  background-image:
    radial-gradient(38% 46% at 12% 8%, rgba(222, 27, 34, 0.06), transparent 62%),
    radial-gradient(42% 52% at 88% 12%, rgba(198, 101, 61, 0.09), transparent 62%),
    radial-gradient(60% 60% at 50% 108%, rgba(240, 231, 216, 0.7), transparent 70%);
}
.mesh-soft {
  background-color: var(--bg-subtle);
  background-image:
    radial-gradient(45% 55% at 85% 0%, rgba(222, 27, 34, 0.045), transparent 60%),
    radial-gradient(50% 60% at 10% 100%, rgba(198, 101, 61, 0.06), transparent 65%);
}

/* Brand "connection node" motif — echoes the logo's dot + line */
.node-divider { position: relative; height: 1px; border: 0; background: linear-gradient(90deg, transparent, var(--border-strong) 18%, var(--border-strong) 82%, transparent); }
.node-divider::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 10px; height: 10px; border-radius: 3px; background: var(--brand);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px var(--brand-soft);
}

/* Premium paper grain — subtle full-page texture */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 9998; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 150px 150px;
  opacity: 0.4;
  mix-blend-mode: soft-light;
}

/* Reveal-on-scroll (gated behind .js for graceful degradation) */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
}