:root {
  --bg: #07060b;
  --bg-2: #0d0b16;
  --panel: #14111f;
  --panel-2: #1b1730;
  --border: #2a2342;
  --text: #ece9f5;
  --muted: #9a93b5;
  --purple: #a855f7;
  --purple-2: #7c3aed;
  --purple-glow: rgba(168, 85, 247, 0.35);
  --danger: #f43f5e;
  --ok: #34d399;
  --radius: 14px;
  --font: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(124, 58, 237, 0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(168, 85, 247, 0.12), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--purple); text-decoration: none; }
a:hover { color: #c99bff; }

.container { max-width: 1040px; margin: 0 auto; padding: 24px 20px 72px; }

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(27, 23, 48, 0.6), rgba(13, 11, 22, 0.2));
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.3px;
}
.brand .dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 14px 2px var(--purple-glow);
}
.brand span.accent { color: var(--purple); }
.nav { display: flex; gap: 8px; align-items: center; }
.nav a {
  padding: 8px 14px; border-radius: 10px; color: var(--muted); font-weight: 600;
  font-size: 0.92rem;
}
.nav a:hover { background: var(--panel-2); color: var(--text); }
.nav a.active { color: var(--text); background: var(--panel-2); }

/* Hero */
.hero { padding: 56px 0 28px; }
.hero h1 { font-size: 2.4rem; margin: 0 0 10px; letter-spacing: -0.5px; }
.hero h1 .accent {
  background: linear-gradient(90deg, var(--purple), #d8b4fe);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { color: var(--muted); font-size: 1.05rem; max-width: 620px; }
.cta-row { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* Cards / panels */
.panel {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, 0.9);
}
.panel + .panel { margin-top: 20px; }
.panel h2 { margin: 0 0 4px; font-size: 1.15rem; }
.panel .sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 18px; }

.grid-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.feature {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px;
}
.feature h3 { margin: 0 0 6px; font-size: 1rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.9rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 11px; font-weight: 700; font-size: 0.92rem;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  cursor: pointer; transition: transform 0.06s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { background: #241d3f; }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: linear-gradient(90deg, var(--purple-2), var(--purple));
  border-color: transparent; color: #fff;
  box-shadow: 0 10px 30px -12px var(--purple-glow);
}
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { background: transparent; border-color: rgba(244, 63, 94, 0.4); color: var(--danger); }
.btn.danger:hover { background: rgba(244, 63, 94, 0.12); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* Forms */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
.input {
  width: 100%; padding: 12px 14px; border-radius: 11px; font-size: 0.95rem;
  background: var(--bg-2); border: 1px solid var(--border); color: var(--text);
  outline: none; transition: border 0.15s ease, box-shadow 0.15s ease;
}
.input:focus { border-color: var(--purple-2); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2); }

/* File list */
.file-list { display: flex; flex-direction: column; gap: 10px; }
.file-row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px;
  background: var(--panel);
}
.file-row:hover { border-color: var(--purple-2); }
.file-icon {
  width: 42px; height: 42px; flex: 0 0 42px; border-radius: 10px;
  display: grid; place-items: center; font-weight: 800; font-size: 0.72rem;
  background: rgba(124, 58, 237, 0.15); color: #c99bff; border: 1px solid var(--border);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.file-meta { flex: 1 1 auto; min-width: 0; }
.file-name {
  font-weight: 650; font-size: 0.98rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.file-sub { color: var(--muted); font-size: 0.82rem; margin-top: 2px; }
.file-actions { display: flex; gap: 8px; flex: 0 0 auto; }

.empty { text-align: center; color: var(--muted); padding: 40px 0; }
.spinner { text-align: center; color: var(--muted); padding: 30px 0; }

/* Toast / alerts */
.alert { padding: 11px 14px; border-radius: 11px; font-size: 0.9rem; margin-bottom: 14px; border: 1px solid transparent; }
.alert.error { background: rgba(244, 63, 94, 0.12); border-color: rgba(244, 63, 94, 0.35); color: #fda4b4; }
.alert.ok { background: rgba(52, 211, 153, 0.12); border-color: rgba(52, 211, 153, 0.35); color: #86efc9; }
.hidden { display: none !important; }

/* Dropzone */
.dropzone {
  border: 1.5px dashed var(--border); border-radius: 12px; padding: 28px; text-align: center;
  color: var(--muted); cursor: pointer; transition: border 0.15s ease, background 0.15s ease;
  background: var(--bg-2);
}
.dropzone.drag { border-color: var(--purple); background: rgba(124, 58, 237, 0.08); color: var(--text); }
.dropzone strong { color: var(--text); }

.progress { height: 8px; background: var(--bg-2); border-radius: 6px; overflow: hidden; margin-top: 14px; border: 1px solid var(--border); }
.progress > div { height: 100%; width: 0; background: linear-gradient(90deg, var(--purple-2), var(--purple)); transition: width 0.2s ease; }

.stats { display: flex; gap: 22px; color: var(--muted); font-size: 0.85rem; margin-top: 10px; flex-wrap: wrap; }
.stats b { color: var(--text); }

footer { color: var(--muted); font-size: 0.82rem; text-align: center; padding: 30px 0 10px; }

@media (max-width: 760px) {
  .grid-cards { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.9rem; }
  .nav a { padding: 7px 10px; }
}