:root {
  --bg: #F6F6F3;
  --surface: #FFFFFF;
  --ink: #191C20;
  --muted: #6B7075;
  --border: #E2E2DE;
  --blue: #2451E0;
  --blue-dark: #1B3EB8;
  --teal: #0E9C88;
  --danger: #D6432E;
  --radius: 14px;
  --font-head: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-head); margin: 0 0 .4em; line-height: 1.15; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 24px; }

/* Topbar */
.topbar { border-bottom: 1px solid var(--border); background: var(--surface); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-family: var(--font-head); font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.logo:hover { text-decoration: none; }
.topnav a { margin-left: 20px; color: var(--ink); font-weight: 500; font-size: .95rem; }

/* Hero / upload zone */
.hero { padding: 64px 0 32px; text-align: center; }
.hero h1 { font-size: 2.3rem; max-width: 640px; margin-left: auto; margin-right: auto; }
.hero p.sub { color: var(--muted); font-size: 1.05rem; max-width: 520px; margin: 0 auto 36px; }

.dropzone {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 20px;
  padding: 56px 24px;
  max-width: 560px;
  margin: 0 auto;
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease;
}
.dropzone.dragover { border-color: var(--blue); background: #F0F4FF; }
.dropzone .icon { font-size: 2.6rem; margin-bottom: 12px; }
.dropzone .primary { font-weight: 600; font-size: 1.1rem; }
.dropzone .secondary { color: var(--muted); font-size: .9rem; margin-top: 6px; }
.dropzone input[type=file] { display: none; }

.limit-note { color: var(--muted); font-size: .85rem; margin-top: 16px; }

/* Progress card */
.progress-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  text-align: left;
}
.progress-card .fname { font-weight: 600; margin-bottom: 4px; word-break: break-all; }
.progress-card .fsize { color: var(--muted); font-size: .85rem; margin-bottom: 14px; }
.progress-bar-track { background: var(--border); border-radius: 8px; height: 10px; overflow: hidden; }
.progress-bar-fill { background: var(--blue); height: 100%; width: 0%; transition: width .15s ease; }
.progress-pct { text-align: right; font-size: .8rem; color: var(--muted); margin-top: 6px; }

/* Result / share link */
.result-card {
  max-width: 560px; margin: 0 auto; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 28px;
  text-align: center;
}
.result-card .check { font-size: 2.2rem; color: var(--teal); }
.link-row {
  display: flex; gap: 8px; margin-top: 18px; margin-bottom: 8px;
}
.link-row input {
  flex: 1; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border);
  font-family: var(--font-body); font-size: .95rem; background: var(--bg); color: var(--ink);
}
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px; border: none;
  font-family: var(--font-body); font-weight: 600; font-size: .95rem; cursor: pointer;
  background: var(--blue); color: #fff; transition: background .15s ease;
}
.btn:hover { background: var(--blue-dark); text-decoration: none; }
.btn.secondary { background: var(--bg); color: var(--ink); border: 1px solid var(--border); }
.btn.block { display: block; width: 100%; }
.expiry-note { color: var(--muted); font-size: .85rem; margin-top: 14px; }

/* Steps strip */
.steps { display: flex; justify-content: center; gap: 48px; margin: 56px 0; flex-wrap: wrap; }
.step { text-align: center; max-width: 180px; }
.step .num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center; font-family: var(--font-head);
  font-weight: 600; margin: 0 auto 10px;
}
.step p { margin: 0; font-size: .9rem; color: var(--muted); }
.step .stitle { font-weight: 600; color: var(--ink); margin-bottom: 2px; }

/* Feature blocks */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 40px 0 70px; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.feature .ficon { font-size: 1.4rem; margin-bottom: 8px; }
.feature h3 { font-size: 1.02rem; }
.feature p { color: var(--muted); font-size: .9rem; margin: 0; }

@media (max-width: 640px) {
  .features { grid-template-columns: 1fr; }
  .steps { gap: 28px; }
  .hero h1 { font-size: 1.7rem; }
}

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 28px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-inner p { color: var(--muted); font-size: .85rem; margin: 0; }
.footer-nav a { margin-left: 16px; color: var(--muted); font-size: .85rem; }

/* Generic pages (login/register/plans) */
.page-card {
  max-width: 420px; margin: 60px auto; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
}
.page-card h1 { font-size: 1.4rem; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.field input { width: 100%; padding: 11px 13px; border-radius: 9px; border: 1px solid var(--border); font-family: var(--font-body); font-size: .95rem; }
.alert { padding: 12px 14px; border-radius: 9px; font-size: .9rem; margin-bottom: 16px; }
.alert.error { background: #FCE9E6; color: var(--danger); }
.alert.success { background: #E5F6F2; color: var(--teal); }

.plans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin: 40px 0; }
.plan-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; text-align: center; }
.plan-card .price { font-family: var(--font-head); font-size: 1.6rem; margin: 10px 0; }
.plan-card ul { list-style: none; padding: 0; margin: 16px 0; color: var(--muted); font-size: .9rem; text-align: left; }
.plan-card li { padding: 5px 0; }
.plan-card li:before { content: "✓ "; color: var(--teal); font-weight: 700; }

/* Admin panel */
.admin-body { background: var(--bg); }
.admin-wrap { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: var(--ink); color: #fff; padding: 24px 0; flex-shrink: 0; }
.admin-sidebar .brand { font-family: var(--font-head); font-weight: 700; padding: 0 24px 20px; font-size: 1.05rem; }
.admin-sidebar a { display: block; padding: 11px 24px; color: #C9CBD1; font-size: .92rem; }
.admin-sidebar a:hover, .admin-sidebar a.active { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }
.admin-main { flex: 1; padding: 32px 40px; max-width: 1100px; }
.admin-main h1 { font-size: 1.5rem; margin-bottom: 24px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; }
.stat-card .num { font-family: var(--font-head); font-size: 1.6rem; }
.stat-card .label { color: var(--muted); font-size: .82rem; }
table.admin-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
table.admin-table th, table.admin-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); text-align: left; font-size: .88rem; }
table.admin-table th { background: var(--bg); font-weight: 600; }
.badge { padding: 3px 9px; border-radius: 20px; font-size: .75rem; font-weight: 600; }
.badge.active { background: #E5F6F2; color: var(--teal); }
.badge.pending { background: #FFF3D6; color: #9A6A00; }
.badge.flagged, .badge.deleted { background: #FCE9E6; color: var(--danger); }
.admin-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 24px; max-width: 640px; }
.admin-card h2 { font-size: 1.1rem; }
.btn.small { padding: 6px 12px; font-size: .8rem; }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #B4301E; }
form .field textarea { width: 100%; padding: 11px 13px; border-radius: 9px; border: 1px solid var(--border); font-family: var(--font-body); }