/* ── CSS Variables ──────────────────────────────────────────────────────────── */
:root {
  --bg-body:       #07101e;
  --bg-nav:        #0a1628;
  --bg-card:       #0d1f3c;
  --bg-card-alt:   #0f2545;
  --bg-hover:      #162f54;
  --bg-input:      #091526;
  --border:        #1a3560;
  --border-light:  #1e3f70;

  --text-primary:  #dde8f5;
  --text-secondary:#8fafc8;
  --text-muted:    #4a6a8a;

  --teal:          #00c9b8;
  --teal-hover:    #00e5d3;
  --teal-dim:      rgba(0, 201, 184, 0.12);
  --teal-glow:     rgba(0, 201, 184, 0.25);

  --red:           #e84040;
  --red-hover:     #ff5252;
  --red-dim:       rgba(232, 64, 64, 0.12);

  --blue-accent:   #3a7bd5;
  --blue-dim:      rgba(58, 123, 213, 0.15);

  --green:         #38a169;
  --green-dim:     rgba(56, 161, 105, 0.15);

  --radius:        8px;
  --radius-sm:     5px;
  --shadow:        0 4px 20px rgba(0,0,0,0.4);
  --shadow-sm:     0 2px 8px  rgba(0,0,0,0.3);
}

/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
}

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-hover); }

/* ── Top Navigation ──────────────────────────────────────────────────────── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

.topnav-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.5px;
}
.topnav-brand i { margin-right: 0.4rem; }

.topnav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topnav-user {
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.topnav-user i { margin-right: 0.3rem; }

.expiry-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}
.expiry-tag strong { color: var(--text-secondary); }

/* ── Main content area ───────────────────────────────────────────────────── */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.25rem;
}
.page-header h1 i { color: var(--teal); margin-right: 0.4rem; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  transition: color 0.2s;
}
.back-link:hover { color: var(--teal); }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.card-title i { color: var(--teal); margin-right: 0.4rem; }

/* ── Alerts ──────────────────────────────────────────────────────────────── */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.alert-error {
  background: var(--red-dim);
  border: 1px solid rgba(232,64,64,0.35);
  color: #ff8080;
}
.alert-success {
  background: var(--green-dim);
  border: 1px solid rgba(56,161,105,0.35);
  color: #68d391;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
  text-decoration: none;
  white-space: nowrap;
}
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.8rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-primary {
  background: var(--blue-accent);
  color: #fff;
}
.btn-primary:hover { background: #4e8fe0; color: #fff; }

.btn-teal {
  background: var(--teal-dim);
  color: var(--teal);
  border: 1px solid var(--teal-glow);
}
.btn-teal:hover { background: var(--teal); color: #051020; }

.btn-red {
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid rgba(232,64,64,0.3);
}
.btn-red:hover { background: var(--red); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.badge-teal  { background: var(--teal-dim);  color: var(--teal);       border: 1px solid var(--teal-glow); }
.badge-blue  { background: var(--blue-dim);  color: #7fb3f5;           border: 1px solid rgba(58,123,213,0.3); }
.badge-red   { background: var(--red-dim);   color: var(--red);        border: 1px solid rgba(232,64,64,0.3); }
.badge-green { background: var(--green-dim); color: #68d391;           border: 1px solid rgba(56,161,105,0.3); }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
}

.data-table td {
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover td { background: var(--bg-hover); }

.data-table tbody tr.row-expired td { opacity: 0.6; }

.actions-col { width: 1%; white-space: nowrap; }
.actions-cell { display: flex; gap: 0.4rem; align-items: center; justify-content: flex-end; }

.td-description { font-weight: 500; }
.type-icon { color: var(--text-muted); margin-right: 0.4rem; width: 1rem; }

/* ── Info table (key/value) ──────────────────────────────────────────────── */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.info-table th {
  text-align: left;
  padding: 0.5rem 0.5rem 0.5rem 0;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: 80px;
  vertical-align: top;
}
.info-table td {
  padding: 0.5rem 0;
  vertical-align: top;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.info-table tr:last-child td { border-bottom: none; }

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.1rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 0.55rem 0.8rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-control:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-dim);
}
.form-control::placeholder { color: var(--text-muted); }

select.form-control option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  display: block;
}

.req { color: var(--red); }

.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.form-card { max-width: 760px; }

/* ── Drop zone ───────────────────────────────────────────────────────────── */
.drop-zone {
  position: relative;
  border: 2px dashed var(--border-light);
  border-radius: var(--radius);
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: rgba(0,0,0,0.1);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--teal);
  background: var(--teal-dim);
}
.drop-zone.drag-over { border-style: solid; }

.drop-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.drop-icon {
  font-size: 2rem;
  color: var(--teal);
  margin-bottom: 0.75rem;
  display: block;
}
.drop-zone p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 0.25rem; }
.drop-link { color: var(--teal); font-weight: 600; }
.drop-hint { font-size: 0.78rem; color: var(--text-muted) !important; }
.drop-filename {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--teal);
  font-weight: 500;
}

/* ── Upload progress ─────────────────────────────────────────────────────── */
.upload-progress {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.progress-bar::after {
  content: '';
  position: absolute;
  left: -40%;
  width: 40%;
  height: 100%;
  background: var(--teal);
  border-radius: 3px;
  animation: progress-slide 1s linear infinite;
}
@keyframes progress-slide {
  to { left: 100%; }
}

/* ── Share box ───────────────────────────────────────────────────────────── */
.share-card { border-color: var(--teal-glow); }
.share-box {
  white-space: pre;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  color: var(--teal);
  margin-bottom: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  word-break: break-all;
  white-space: pre-wrap;
}

/* ── User layout ─────────────────────────────────────────────────────────── */
.user-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.25rem;
  align-items: start;
}
@media (max-width: 900px) {
  .user-layout { grid-template-columns: 1fr; }
}

/* ── Empty states ────────────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  text-align: center;
  gap: 0.75rem;
}
.empty-state i { font-size: 2.5rem; color: var(--border-light); }
.empty-state p  { font-size: 0.9rem; }
.empty-state.small { padding: 2rem 1rem; }
.empty-state.small i { font-size: 1.8rem; }

/* ── Auth pages (login / expired / password) ─────────────────────────────── */
.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at center, #0d2040 0%, #07101e 70%);
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--teal);
}
.auth-logo i { font-size: 1.6rem; }
.auth-logo.expired-icon i { color: var(--red); }

.auth-title {
  text-align: center;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.expired-message {
  text-align: center;
  padding: 1rem 0;
}
.expired-message h2 {
  color: var(--red);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}
.expired-message p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ── User space layout (files + events panel) ────────────────────────────── */
.space-layout {
  display: grid;
  grid-template-columns: 1fr 290px;
  gap: 1.25rem;
  align-items: start;
}
@media (max-width: 960px) {
  .space-layout {
    grid-template-columns: 1fr;
  }
  .events-panel { position: static !important; }
}

/* ── Events panel ────────────────────────────────────────────────────────── */
.events-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  position: sticky;
  top: 76px;
  max-height: calc(100vh - 100px);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.events-panel-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
  flex-shrink: 0;
}
.events-panel-header i  { color: var(--teal); }
.events-count           { margin-left: auto; }

.events-list {
  overflow-y: auto;
  flex: 1;
  padding: 0.5rem 0;
}

.event-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background 0.15s;
}
.event-item:last-child { border-bottom: none; }
.event-item:hover      { background: var(--bg-hover); }

.event-icon-wrap {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  background: color-mix(in srgb, var(--ev-color) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--ev-color) 30%, transparent);
  color: var(--ev-color);
  margin-top: 0.1rem;
}

.event-body  { flex: 1; min-width: 0; }

.event-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.event-detail {
  font-weight: 400;
  color: var(--text-secondary);
}
.event-time {
  font-size: 0.73rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.events-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.events-empty i { font-size: 1.5rem; color: var(--border-light); }

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--teal); }