/* DropVault — Dark blue hacker theme, mobile-first */
:root {
  --bg:          #080a0f;
  --bg2:         #0d1117;
  --bg3:         #131920;
  --border:      #1c2433;
  --border2:     #243044;
  --accent:      #1d6df5;
  --accent2:     #1558cc;
  --accent-glow: rgba(29,109,245,0.15);
  --text:        #c8d3e8;
  --text-dim:    #5a6b85;
  --text-bright: #e8eef8;
  --danger:      #e05260;
  --success:     #0ecb81;
  --warn:        #f0a020;
  --font-mono:   'JetBrains Mono', 'Fira Code', monospace;
  --font-ui:     'Inter', system-ui, sans-serif;
  --radius:      5px;
  --radius-lg:   10px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); text-decoration: underline; }
img, video { max-width: 100%; display: block; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Logo / Brand ── */
.logo {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.logo-drop { color: var(--accent); }
.logo-vault { color: var(--text-bright); }

/* ── Topbar ── */
nav.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
nav.topbar .inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  height: 52px;
  gap: 8px;
}
.nav-links {
  display: flex;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  color: var(--text-dim);
  font-size: 0.82rem;
  padding: 6px 10px;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-bright);
  background: var(--bg3);
  text-decoration: none;
}
.nav-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.nav-user {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  white-space: nowrap;
}
.nav-user strong { color: var(--accent); }

/* ── Page wrap ── */
.page-wrap {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 16px;
}
.page-header {
  padding: 24px 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.page-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-bright);
}
.page-title .prefix { color: var(--accent); margin-right: 6px; }

/* ── Cards ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.card + .card { margin-top: 16px; }
.card-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.84rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s, border-color 0.15s;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent2); border-color: var(--accent2); color: #fff; text-decoration: none; }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.btn-ghost { background: transparent; color: var(--text-dim); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg3); color: var(--text-bright); text-decoration: none; }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; text-decoration: none; }
.btn-success { background: var(--success); color: #000; border-color: var(--success); }
.btn-sm { padding: 5px 10px; font-size: 0.76rem; }
.btn-xs { padding: 3px 8px; font-size: 0.72rem; }
.btn-full { width: 100%; }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
input[type="text"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="file"],
textarea,
select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-bright);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  padding: 9px 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
  appearance: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
textarea { resize: vertical; min-height: 70px; }
input[type="file"] { cursor: pointer; padding: 8px; font-family: var(--font-ui); }
.form-hint { font-size: 0.72rem; color: var(--text-dim); margin-top: 4px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}

/* Unit toggle button (MB/GB, H/M) */
.input-with-unit {
  display: flex;
  gap: 0;
}
.input-with-unit input {
  border-radius: var(--radius) 0 0 var(--radius);
  flex: 1;
  min-width: 0;
}
.unit-toggle {
  background: var(--border2);
  border: 1px solid var(--border);
  border-left: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-bright);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0 12px;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.unit-toggle:hover { background: var(--accent-glow); color: var(--accent); }

/* Checkbox */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.checkbox-row input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--accent);
  flex-shrink: 0;
}
.checkbox-row label {
  margin: 0;
  text-transform: none;
  font-size: 0.85rem;
  color: var(--text);
  letter-spacing: 0;
  font-weight: 400;
}

/* Toggle switch */
.toggle-wrap { display: flex; align-items: center; gap: 10px; }
.toggle { position: relative; display: inline-block; width: 40px; height: 22px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--border2);
  border-radius: 22px;
  cursor: pointer;
  transition: background 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }
.toggle-label { font-size: 0.85rem; color: var(--text); }

/* ── Alerts ── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.84rem;
  margin-bottom: 14px;
  border: 1px solid;
}
.alert-error   { background: rgba(224,82,96,0.1);  border-color: rgba(224,82,96,0.35);  color: #ff8a95; }
.alert-success { background: rgba(14,203,129,0.1); border-color: rgba(14,203,129,0.35); color: var(--success); }
.alert-info    { background: rgba(29,109,245,0.1); border-color: rgba(29,109,245,0.3);  color: #7eb8ff; }
.alert-warn    { background: rgba(240,160,32,0.1); border-color: rgba(240,160,32,0.3);  color: var(--warn); }

/* ── Tables — responsive ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; min-width: 480px; }
.data-table th {
  text-align: left;
  padding: 10px 12px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.mono { font-family: var(--font-mono); }
.dim  { color: var(--text-dim); }
.file-size { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-dim); white-space: nowrap; }

/* Mobile card fallback for tables */
@media (max-width: 600px) {
  .data-table { min-width: 0; }
  .data-table thead { display: none; }
  .data-table tr {
    display: block;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 10px;
    padding: 10px 12px;
    background: var(--bg3);
  }
  .data-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    border: none;
    font-size: 0.8rem;
  }
  .data-table td::before {
    content: attr(data-label);
    font-size: 0.68rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    flex-shrink: 0;
    margin-right: 8px;
  }
  .data-table td:last-child { margin-top: 6px; justify-content: flex-end; }
}

/* ── Quota bar ── */
.quota-section { margin-bottom: 24px; }
.quota-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  flex-wrap: wrap;
  gap: 4px;
}
.quota-label strong { color: var(--text); }
.quota-bar { height: 5px; background: var(--bg3); border-radius: 3px; overflow: hidden; border: 1px solid var(--border); }
.quota-fill { height: 100%; border-radius: 3px; background: var(--accent); transition: width 0.4s ease; }
.quota-fill.warn { background: var(--warn); }
.quota-fill.full { background: var(--danger); }

/* ── Login page ── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: radial-gradient(ellipse at 50% 0%, rgba(29,109,245,0.07) 0%, transparent 60%), var(--bg);
}
.login-box { width: 100%; max-width: 400px; }
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo .brand {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.login-logo p { font-size: 0.78rem; color: var(--text-dim); margin-top: 6px; }

/* ── Upload page ── */
.upload-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--bg3);
  padding: 4px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.upload-tab {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  color: var(--text-dim);
  border: none;
  background: transparent;
  -webkit-tap-highlight-color: transparent;
}
.upload-tab.active {
  background: var(--bg2);
  color: var(--text-bright);
  border: 1px solid var(--border);
}
.upload-panel { display: none; }
.upload-panel.active { display: block; }

/* Upload extras — password protection + expiry */
.upload-extras {
  margin: 18px 0;
  padding: 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.extras-row { margin-bottom: 14px; }
.extras-row:last-child { margin-bottom: 0; }
.extras-row input[type="text"],
.extras-row input[type="number"] { font-family: var(--font-ui); }

/* Progress */
.progress-wrap { margin-top: 14px; display: none; }
.progress-bar { height: 5px; background: var(--bg3); border-radius: 3px; overflow: hidden; border: 1px solid var(--border); margin-bottom: 5px; }
.progress-fill { height: 100%; background: var(--accent); border-radius: 3px; width: 0%; transition: width 0.1s linear; }
.progress-fill.progress-indeterminate {
  background: linear-gradient(90deg, var(--accent) 25%, var(--accent2) 50%, var(--accent) 75%);
  background-size: 200% 100%;
  animation: indeterminate-sweep 1.2s linear infinite;
}
@keyframes indeterminate-sweep {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.progress-label { font-size: 0.75rem; color: var(--text-dim); font-family: var(--font-mono); }
.upload-result { margin-top: 14px; display: none; }
.result-link-box {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 10px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  word-break: break-all;
  flex-wrap: wrap;
}

/* ── File public page ── */
.file-page { max-width: 860px; margin: 36px auto; padding: 0 16px 40px; }
.file-title { font-size: 1.3rem; font-weight: 700; color: var(--text-bright); margin-bottom: 10px; line-height: 1.3; }
.file-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.77rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}
.file-meta span strong { color: var(--text); }
.file-desc { margin-top: 14px; color: var(--text); font-size: 0.88rem; line-height: 1.7; }
.preview-box {
  margin: 20px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}
.preview-box video { width: 100%; display: block; }
.preview-box audio { width: 100%; padding: 16px; background: var(--bg2); display: block; }
.preview-box img { max-width: 100%; object-fit: contain; max-height: 70vh; margin: 0 auto; display: block; }
.pdf-embed { width: 100%; height: min(600px, 80vh); border: none; display: block; }
.download-zone { text-align: center; padding: 40px 20px; }
.download-icon { font-size: 2.5rem; margin-bottom: 10px; opacity: 0.35; }

/* Password-protected file lock screen */
.lock-card { text-align: center; padding: 36px 24px; max-width: 420px; margin: 24px auto; }
.lock-icon { font-size: 2.5rem; margin-bottom: 12px; }
.lock-title { font-size: 1.05rem; font-weight: 700; color: var(--text-bright); margin-bottom: 6px; }
.lock-desc { font-size: 0.84rem; color: var(--text-dim); margin-bottom: 18px; }

/* ── Free Downloader ── */
.free-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: radial-gradient(ellipse at 50% 20%, rgba(29,109,245,0.08) 0%, transparent 60%), var(--bg);
}
.free-box { width: 100%; max-width: 560px; }
.free-logo { text-align: center; margin-bottom: 32px; }
.free-logo .brand { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 700; }
.free-logo p { font-size: 0.8rem; color: var(--text-dim); margin-top: 6px; }
.free-corner-login {
  position: fixed;
  top: 16px;
  right: 16px;
}
.status-box {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-top: 14px;
  display: none;
}
.status-filename { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-bright); word-break: break-all; }
.status-size { font-size: 0.75rem; color: var(--text-dim); margin-top: 3px; }

.my-file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.my-file-row:last-child { border-bottom: none; }
.my-file-info { flex: 1; min-width: 0; }
.my-file-name { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-bright); word-break: break-all; }
.my-file-meta { font-size: 0.72rem; color: var(--text-dim); margin-top: 2px; }
.my-file-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ── Admin panel ── */
.admin-badge {
  font-size: 0.68rem;
  background: var(--danger);
  color: #fff;
  padding: 2px 7px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.setting-item { }
.setting-item label { margin-bottom: 6px; }
.settings-section-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
}
.modal-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow);
}
.modal-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 18px;
}

/* ── Tags / badges ── */
.tag {
  display: inline-block;
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.tag-blue  { background: rgba(29,109,245,0.2); color: #7eb8ff; }
.tag-green { background: rgba(14,203,129,0.15); color: var(--success); }
.tag-red   { background: rgba(224,82,96,0.18); color: #ff8a95; }
.tag-warn  { background: rgba(240,160,32,0.15); color: var(--warn); }

/* ── Copy button ── */
.copy-btn {
  cursor: pointer;
  font-size: 0.72rem;
  color: var(--text-dim);
  background: none;
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: var(--radius);
  transition: color 0.1s, background 0.1s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.copy-btn:hover { color: var(--accent); background: var(--bg3); }

/* ── Empty state ── */
.empty-state { text-align: center; padding: 32px 16px; color: var(--text-dim); font-size: 0.82rem; }
.empty-state .icon { font-size: 2rem; margin-bottom: 8px; opacity: 0.3; }

/* ── 404 page ── */
.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 16px;
  background: radial-gradient(ellipse at 50% 30%, rgba(224,82,96,0.06) 0%, transparent 60%), var(--bg);
}
.error-code {
  font-family: var(--font-mono);
  font-size: clamp(5rem, 20vw, 10rem);
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--danger) 0%, #7a2030 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.error-title { font-size: 1.2rem; font-weight: 700; color: var(--text-bright); margin: 12px 0 8px; }
.error-desc { color: var(--text-dim); font-size: 0.88rem; max-width: 360px; line-height: 1.6; }
.error-actions { display: flex; gap: 10px; margin-top: 24px; flex-wrap: wrap; justify-content: center; }

/* ── Change password page ── */
.cp-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: var(--bg);
}
.cp-box { width: 100%; max-width: 400px; }
.cp-box .must-badge {
  display: inline-block;
  background: rgba(240,160,32,0.15);
  border: 1px solid rgba(240,160,32,0.3);
  color: var(--warn);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
}

/* ── Responsive nav ── */
@media (max-width: 480px) {
  .nav-user { display: none; }
  .logo { font-size: 1rem; }
}

/* ── Responsive cards ── */
@media (max-width: 640px) {
  .card { padding: 14px; }
  .page-header { padding: 16px 0 14px; margin-bottom: 16px; }
  .file-page { margin: 20px auto; }
  .file-title { font-size: 1.1rem; }
}