/* ============================================================
   FileHost — Global Stylesheet
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --primary:    #6366f1;
  --primary-d:  #4f46e5;
  --primary-l:  #818cf8;
  --secondary:  #8b5cf6;
  --accent:     #06b6d4;
  --bg:         #0f0f1a;
  --bg2:        #16162a;
  --surface:    #1e1e35;
  --surface2:   #2a2a45;
  --border:     rgba(255,255,255,.08);
  --text:       #f1f5f9;
  --text2:      #94a3b8;
  --text3:      #64748b;
  --success:    #10b981;
  --danger:     #ef4444;
  --warning:    #f59e0b;
  --info:       #3b82f6;
  --radius:     12px;
  --radius-sm:  8px;
  --radius-lg:  16px;
  --shadow:     0 4px 24px rgba(0,0,0,.35);
  --shadow-sm:  0 2px 8px rgba(0,0,0,.2);
  --shadow-lg:  0 8px 40px rgba(0,0,0,.5);
  --transition: .2s ease;
  --glow:       0 0 20px rgba(99,102,241,.3);
}

[data-theme="light"] {
  --bg:       #f8fafc;
  --bg2:      #f1f5f9;
  --surface:  #ffffff;
  --surface2: #f8fafc;
  --border:   rgba(0,0,0,.08);
  --text:     #0f172a;
  --text2:    #475569;
  --text3:    #94a3b8;
  --shadow:   0 4px 24px rgba(0,0,0,.08);
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-l); }
img { max-width: 100%; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

/* ── Layout ─────────────────────────────────────────────────── */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 720px; }
.container-xs { max-width: 480px; }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15,15,26,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}
[data-theme="light"] .navbar { background: rgba(248,250,252,.9); }
.navbar.scrolled { box-shadow: var(--shadow); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 24px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.1rem; color: var(--text);
  text-decoration: none;
}
.nav-brand:hover { color: var(--text); }
.brand-icon {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: .9rem;
}
.brand-name { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav-links {
  display: flex; align-items: center; gap: 8px; margin-left: auto;
}
.nav-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm);
  font-size: .875rem; font-weight: 500; color: var(--text2);
  transition: all var(--transition); border: none; background: none;
  cursor: pointer;
}
.nav-link:hover, .nav-link.active { color: var(--text); background: var(--surface); }

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-trigger { white-space: nowrap; }
.dropdown-menu {
  position: absolute; right: 0; top: calc(100% + 8px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  min-width: 180px;
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(-8px) scale(.97);
  pointer-events: none;
  transition: all var(--transition);
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu {
  opacity: 1; transform: translateY(0) scale(1); pointer-events: all;
}
.dropdown-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: .875rem; color: var(--text2);
  transition: all var(--transition);
}
.dropdown-menu a:hover { background: var(--surface2); color: var(--text); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }
.text-danger { color: var(--danger) !important; }

.nav-burger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; padding: 6px; cursor: pointer;
}
.nav-burger span {
  display: block; width: 22px; height: 2px;
  background: var(--text2); border-radius: 2px;
  transition: all var(--transition);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: all var(--transition); white-space: nowrap;
  text-decoration: none; line-height: 1;
}
.btn-sm { padding: 7px 14px; font-size: .8rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-xl { padding: 16px 40px; font-size: 1.05rem; border-radius: var(--radius); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; box-shadow: 0 4px 15px rgba(99,102,241,.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99,102,241,.4);
  color: #fff;
}

.btn-secondary { background: var(--secondary); color: #fff; }
.btn-secondary:hover { filter: brightness(1.1); transform: translateY(-1px); color: #fff; }

.btn-outline {
  background: transparent; border: 1.5px solid var(--border); color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(99,102,241,.08); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.1); color: #fff; }

.btn-success { background: var(--success); color: #fff; }
.btn-glass {
  background: rgba(255,255,255,.06); backdrop-filter: blur(8px);
  border: 1px solid var(--border); color: var(--text);
}
.btn-glass:hover { background: rgba(255,255,255,.1); color: var(--text); }

.btn:disabled, .btn[disabled] { opacity: .5; cursor: not-allowed; transform: none !important; }

.btn-icon {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text2); cursor: pointer; transition: all var(--transition);
}
.btn-icon:hover { color: var(--text); border-color: var(--primary); }

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition);
}
.card:hover { border-color: rgba(99,102,241,.25); }
.card-hover:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* ── Stat Cards ─────────────────────────────────────────────── */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: opacity var(--transition);
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover { border-color: rgba(99,102,241,.2); transform: translateY(-2px); }

.stat-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; margin-bottom: 16px;
}
.stat-icon.indigo { background: rgba(99,102,241,.15); color: var(--primary); }
.stat-icon.violet { background: rgba(139,92,246,.15); color: var(--secondary); }
.stat-icon.cyan   { background: rgba(6,182,212,.15); color: var(--accent); }
.stat-icon.green  { background: rgba(16,185,129,.15); color: var(--success); }
.stat-icon.orange { background: rgba(245,158,11,.15); color: var(--warning); }
.stat-icon.red    { background: rgba(239,68,68,.15); color: var(--danger); }

.stat-value { font-size: 2rem; font-weight: 700; letter-spacing: -.5px; line-height: 1; }
.stat-label { font-size: .78rem; color: var(--text2); margin-top: 6px; text-transform: uppercase; letter-spacing: .6px; font-weight: 500; }
.stat-delta {
  font-size: .78rem; font-weight: 600; margin-top: 8px;
  display: flex; align-items: center; gap: 4px;
}
.stat-delta.up   { color: var(--success); }
.stat-delta.down { color: var(--danger); }

/* ── Grid ───────────────────────────────────────────────────── */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ── Forms ──────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block; margin-bottom: 7px; font-size: .875rem;
  color: var(--text2); font-weight: 500;
}
.form-label .required { color: var(--danger); margin-left: 3px; }
.form-control {
  width: 100%; padding: 11px 14px;
  background: var(--surface2); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-size: .9rem;
  transition: all var(--transition); outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}
.form-control::placeholder { color: var(--text3); }
.form-control.is-invalid { border-color: var(--danger); }

textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { cursor: pointer; }

.form-text { font-size: .8rem; color: var(--text3); margin-top: 5px; }
.form-error { font-size: .8rem; color: var(--danger); margin-top: 5px; }

.input-group { display: flex; }
.input-group .form-control { border-radius: var(--radius-sm) 0 0 var(--radius-sm); border-right: none; }
.input-group .btn { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 20px;
  font-size: .72rem; font-weight: 600; letter-spacing: .3px; white-space: nowrap;
}
.badge-primary  { background: rgba(99,102,241,.15); color: var(--primary); }
.badge-secondary{ background: rgba(139,92,246,.15); color: var(--secondary); }
.badge-success  { background: rgba(16,185,129,.15); color: var(--success); }
.badge-danger   { background: rgba(239,68,68,.15); color: var(--danger); }
.badge-warning  { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-info     { background: rgba(59,130,246,.15); color: var(--info); }
.badge-muted    { background: var(--surface2); color: var(--text3); }

/* ── Alerts ─────────────────────────────────────────────────── */
.alert {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  margin-bottom: 16px; font-size: .9rem; line-height: 1.5;
  position: relative;
}
.alert i { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.alert-success { background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.25); color: var(--success); }
.alert-danger  { background: rgba(239,68,68,.1);  border: 1px solid rgba(239,68,68,.25);  color: var(--danger); }
.alert-warning { background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.25); color: var(--warning); }
.alert-info    { background: rgba(59,130,246,.1); border: 1px solid rgba(59,130,246,.25); color: var(--info); }
.alert-close {
  position: absolute; right: 12px; top: 12px;
  background: none; border: none; color: inherit;
  cursor: pointer; opacity: .6; font-size: .9rem;
}
.alert-close:hover { opacity: 1; }
.flash-container { position: relative; z-index: 10; }

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.table-wrap table { width: 100%; border-collapse: collapse; }
table thead tr { background: var(--surface2); }
table th {
  padding: 13px 16px; text-align: left;
  font-size: .78rem; font-weight: 600; color: var(--text2);
  text-transform: uppercase; letter-spacing: .5px;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
table td {
  padding: 14px 16px; font-size: .875rem;
  border-bottom: 1px solid var(--border); color: var(--text);
}
table tbody tr:last-child td { border-bottom: none; }
table tbody tr { transition: background var(--transition); }
table tbody tr:hover { background: var(--surface2); }

/* ── Page Headers ───────────────────────────────────────────── */
.page-header { padding: 40px 0 24px; }
.page-header-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.page-title { font-size: 1.75rem; font-weight: 700; letter-spacing: -.5px; }
.page-subtitle { color: var(--text2); margin-top: 4px; font-size: .9rem; }

/* ── Pagination ─────────────────────────────────────────────── */
.pagination { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.page-list { display: flex; gap: 4px; list-style: none; }
.page-btn {
  display: flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px; padding: 0 10px;
  border-radius: var(--radius-sm); font-size: .85rem; font-weight: 500;
  color: var(--text2); background: var(--surface);
  border: 1px solid var(--border); transition: all var(--transition);
}
.page-btn:hover { color: var(--primary); border-color: var(--primary); }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-info { font-size: .8rem; color: var(--text3); }

/* ── Announcement Bar ───────────────────────────────────────── */
.announcement-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 24px; font-size: .875rem; text-align: center;
  justify-content: center;
}
.announcement-info    { background: rgba(59,130,246,.12); color: var(--info); }
.announcement-success { background: rgba(16,185,129,.12); color: var(--success); }
.announcement-warning { background: rgba(245,158,11,.12); color: var(--warning); }
.announcement-danger  { background: rgba(239,68,68,.12); color: var(--danger); }

/* ── Hero Section ───────────────────────────────────────────── */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at 60% 40%, rgba(99,102,241,.12) 0%, transparent 60%),
              radial-gradient(ellipse at 30% 70%, rgba(139,92,246,.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(99,102,241,.12); border: 1px solid rgba(99,102,241,.25);
  color: var(--primary-l); padding: 6px 16px; border-radius: 20px;
  font-size: .8rem; font-weight: 600; letter-spacing: .3px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800; letter-spacing: -1.5px; line-height: 1.1;
  margin-bottom: 20px;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero p {
  font-size: 1.15rem; color: var(--text2); max-width: 560px;
  margin: 0 auto 36px; line-height: 1.7;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex; justify-content: center; gap: 48px;
  margin-top: 64px; flex-wrap: wrap;
}
.hero-stat .value { font-size: 1.6rem; font-weight: 700; color: var(--text); }
.hero-stat .label { font-size: .8rem; color: var(--text3); margin-top: 2px; }

/* ── Features ───────────────────────────────────────────────── */
.features { padding: 80px 0; }
.features-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,.04), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.feature-card:hover { border-color: rgba(99,102,241,.3); transform: translateY(-4px); }
.feature-card:hover::after { opacity: 1; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(99,102,241,.15), rgba(139,92,246,.1));
  color: var(--primary);
}
.feature-title { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.feature-desc  { font-size: .875rem; color: var(--text2); line-height: 1.65; }

/* ── How it Works ───────────────────────────────────────────── */
.steps { padding: 80px 0; }
.steps-list { display: flex; gap: 0; counter-reset: step; flex-wrap: wrap; }
.step-item {
  flex: 1; min-width: 200px; text-align: center;
  padding: 32px 24px; position: relative;
}
.step-item:not(:last-child)::after {
  content: ''; position: absolute; top: 56px; right: 0;
  width: 50%; height: 1px; background: var(--border);
}
.step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; font-size: 1.1rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; position: relative; z-index: 1;
  box-shadow: 0 0 0 4px rgba(99,102,241,.15);
}
.step-title { font-size: .95rem; font-weight: 600; margin-bottom: 8px; }
.step-desc  { font-size: .85rem; color: var(--text2); }

/* ── Section Headers ────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 52px; }
.section-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(99,102,241,.1); border: 1px solid rgba(99,102,241,.2);
  color: var(--primary-l); padding: 5px 14px; border-radius: 20px;
  font-size: .75rem; font-weight: 600; letter-spacing: .5px; text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title { font-size: 2rem; font-weight: 700; letter-spacing: -.5px; }
.section-subtitle { color: var(--text2); max-width: 540px; margin: 12px auto 0; }

/* ── CTA Section ────────────────────────────────────────────── */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(99,102,241,.08) 0%, rgba(139,92,246,.05) 50%, rgba(6,182,212,.05) 100%);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.cta-inner { text-align: center; }
.cta-title { font-size: 2.2rem; font-weight: 700; letter-spacing: -.5px; margin-bottom: 14px; }
.cta-subtitle { color: var(--text2); margin-bottom: 32px; font-size: 1.05rem; }

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
  margin-top: auto;
}
.footer-inner {
  display: flex; justify-content: space-between;
  gap: 40px; flex-wrap: wrap; margin-bottom: 48px;
}
.footer-brand .brand-icon { margin-bottom: 12px; }
.footer-brand .brand-name { font-size: 1.1rem; font-weight: 700; }
.footer-tagline { color: var(--text3); font-size: .85rem; margin-top: 8px; max-width: 240px; }
.footer-links { display: flex; gap: 56px; flex-wrap: wrap; }
.footer-col h4 { font-size: .8rem; font-weight: 700; color: var(--text2); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 14px; }
.footer-col a { display: block; color: var(--text3); font-size: .875rem; margin-bottom: 10px; transition: color var(--transition); }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0; text-align: center;
  color: var(--text3); font-size: .825rem;
}

/* ── Misc ───────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text3); }
.text-sm     { font-size: .8rem; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.gap-2 { gap: 16px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.w-100 { width: 100%; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }