/* ═══════════════════════════════════════════════════
   MAIN.CSS — Design system, reset, base, layout
═══════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ──────────────────────────────── */
:root {
  --bg:        #f5f4f0;
  --surface:   #ece9e2;
  --card:      #ffffff;
  --ink:       #1b1a17;
  --ink2:      #4a4744;
  --ink3:      #9c9891;
  --accent:    #1a56db;
  --accent-h:  #1545b8;
  --warm:      #d95f2b;
  --line:      rgba(27,26,23,0.08);
  --line2:     rgba(27,26,23,0.14);
  --shadow:    0 2px 24px rgba(27,26,23,0.07);
  --shadow-lg: 0 12px 48px rgba(27,26,23,0.10);
  --radius-sm: 10px;
  --radius:    16px;
  --radius-lg: 24px;
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Mono', monospace;
  --ease:      cubic-bezier(0.16,1,0.3,1);
  --ease-in:   cubic-bezier(0.4,0,1,1);
  --nav-h:     70px;
}

/* ── RESET ───────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:15px; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: none;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: var(--font-body); cursor: none; }
img { display: block; max-width: 100%; }

/* ── SCROLLBAR ───────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--ink3); border-radius: 4px; }

/* ── NOISE TEXTURE ───────────────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 1000;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  opacity: 0.5;
}

/* ── CONTAINER ───────────────────────────────────── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ── BUTTONS ─────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-body); font-size: 13px; letter-spacing: 0.3px;
  border: none; border-radius: 100px; padding: 12px 26px;
  transition: background 0.25s, color 0.25s, transform 0.2s var(--ease), box-shadow 0.25s;
  cursor: none; position: relative; overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0; transition: opacity 0.2s;
}
.btn:hover::after { opacity: 1; }
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 4px 20px rgba(26,86,219,0.3);
}
.btn-primary:hover {
  background: var(--accent-h);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(26,86,219,0.4);
}
.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1.5px solid var(--line2);
}
.btn-ghost:hover {
  border-color: var(--accent); color: var(--accent);
  transform: translateY(-2px);
}
.btn-submit { margin-top: 8px; }

/* ── SECTION SHARED ──────────────────────────────── */
section { padding: 100px 0; position: relative; }
section:nth-child(even) { background: var(--surface); }
#home { padding: 0; background: var(--bg); }
#contact { background: var(--ink); }

.section-header { margin-bottom: 60px; }
.section-eyebrow {
  font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--accent); display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
}
.section-eyebrow::before {
  content: ''; display: block; width: 22px; height: 1.5px; background: var(--accent);
}
.section-title {
  font-family: var(--font-head); font-size: clamp(30px, 4vw, 52px);
  font-weight: 800; line-height: 1.08; letter-spacing: -1.5px;
  color: var(--ink);
}
#contact .section-title { color: #fff; }
#contact .section-eyebrow { color: rgba(255,255,255,0.5); }
#contact .section-eyebrow::before { background: rgba(255,255,255,0.4); }

/* ── PRELOADER ───────────────────────────────────── */
#preloader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s var(--ease), visibility 0.5s;
}
#preloader.done { opacity: 0; visibility: hidden; }
.pre-inner {
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}
.pre-logo {
  width: 60px; height: 60px;
}
.pre-logo circle {
  animation: dashFill 1.6s var(--ease) forwards;
}
@keyframes dashFill {
  to { stroke-dashoffset: 0; }
}
.pre-bar {
  width: 200px; height: 2px;
  background: var(--line2); border-radius: 2px; overflow: hidden;
}
.pre-progress {
  width: 0%; height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s var(--ease);
}
.pre-label {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--ink3);
}

/* ── CURSOR ──────────────────────────────────────── */
#cursor-dot {
  position: fixed; z-index: 9990; pointer-events: none;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, background 0.2s;
  will-change: left, top;
}
#cursor-ring {
  position: fixed; z-index: 9989; pointer-events: none;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1.5px solid var(--accent);
  transform: translate(-50%, -50%);
  opacity: 0.45;
  transition: width 0.3s var(--ease), height 0.3s var(--ease), opacity 0.3s;
  will-change: left, top;
}
body.cursor-hover #cursor-dot { width: 5px; height: 5px; background: var(--warm); }
body.cursor-hover #cursor-ring { width: 50px; height: 50px; opacity: 0.25; }
body.cursor-click #cursor-dot { transform: translate(-50%,-50%) scale(0.7); }