*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0b0f1a;
  --surface: #111827;
  --surface-2: #1f2937;
  --border: #374151;
  --border-highlight: #4f5d75;
  --text: #f9fafb;
  --text-muted: #9ca3af;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-soft: rgba(99, 102, 241, 0.12);
  --danger: #ef4444;
  --success: #10b981;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 160ms ease;
}

html { height: 100%; }

body {
  min-height: 100%;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input { font: inherit; }

.container {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Login ───────────────────────────────────────────── */

.login-wrap {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.login-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }

.field label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.field input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}

.field input:focus {
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background var(--transition), opacity var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: white;
  width: 100%;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  margin-bottom: 12px;
  min-height: 20px;
}

/* ── Header ──────────────────────────────────────────── */

header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 880px;
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 1rem;
}

.btn-logout {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.btn-logout:hover {
  color: var(--text);
  background: var(--surface-2);
}

/* ── Main ────────────────────────────────────────────── */

main {
  flex: 1;
  padding: 32px 24px 80px;
}

.main-inner {
  max-width: 880px;
  margin: 0 auto;
}

/* ── Dropzone ────────────────────────────────────────── */

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  position: relative;
}

.dropzone:hover,
.dropzone.dragging {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.dropzone-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
  opacity: 0.8;
}

.dropzone-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.dropzone-hint {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.dropzone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* ── Upload queue ────────────────────────────────────── */

.queue { margin-top: 28px; display: flex; flex-direction: column; gap: 8px; }

.queue-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
}

.queue-item .name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.queue-item .status-ok  { color: var(--success); font-size: 0.85rem; }
.queue-item .status-err { color: var(--danger);  font-size: 0.85rem; }

.queue-item .size {
  color: var(--text-muted);
  font-size: 0.82rem;
  flex-shrink: 0;
}

/* ── Progress bar ────────────────────────────────────── */

.progress-wrap {
  margin-top: 16px;
  display: none;
}

.progress-wrap.visible { display: block; }

.progress-bar {
  height: 4px;
  background: var(--surface-2);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 80ms linear;
}

.progress-label {
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Files list ──────────────────────────────────────── */

.section-heading {
  margin: 36px 0 14px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.files-empty {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.file-list { display: flex; flex-direction: column; gap: 6px; }

.file-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: border-color var(--transition);
}

.file-row:hover { border-color: var(--border-highlight); }

.file-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: var(--surface-2);
}

.file-info { flex: 1; min-width: 0; }

.file-name {
  font-weight: 500;
  font-size: 0.93rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.file-actions { display: flex; gap: 6px; flex-shrink: 0; }

.btn-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  transition: background var(--transition), color var(--transition);
  color: var(--text-muted);
}

.btn-icon:hover { background: var(--surface-2); color: var(--text); }
.btn-icon.danger:hover { background: rgba(239,68,68,0.12); color: var(--danger); }

/* ── Toast ───────────────────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
  pointer-events: none;
}

.toast {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  animation: slideIn 220ms ease both;
  pointer-events: auto;
}

.toast.err  { border-color: var(--danger); }
.toast.ok   { border-color: var(--success); }

@keyframes slideIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Loading spinner ─────────────────────────────────── */

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }