/* Share Portal — modern dark UI with glass effects
   Dark theme by default, light via [data-theme="light"] (auto via prefers-color-scheme when JS toggles).
   Focus: clean typography, status badges, share-card tables, friendly 410 pages. */

:root {
  /* palette — dark default */
  --bg: #0b1020;
  --bg-elev-1: #111733;
  --bg-elev-2: #161d3f;
  --surface: #101731;
  --surface-hover: #182147;
  --border: #1f2a44;
  --border-strong: #2a3a5c;
  --text: #e6e8f5;
  --text-muted: #8c97b8;
  --text-soft: #6b7596;
  --accent: #6aa6ff;
  --accent-hover: #84b8ff;
  --accent-soft: rgba(106, 166, 255, 0.12);
  --ok: #6ee7a0;
  --ok-soft: rgba(110, 231, 160, 0.12);
  --warn: #f0c674;
  --warn-soft: rgba(240, 198, 116, 0.14);
  --bad: #ff8a9b;
  --bad-soft: rgba(255, 138, 155, 0.14);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.3), 0 1px 4px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(106, 166, 255, 0.15), 0 0 40px rgba(106, 166, 255, 0.05);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --container: 1100px;
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Monaco, Consolas, monospace;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-elev-1: #ffffff;
  --bg-elev-2: #eef1f8;
  --surface: #ffffff;
  --surface-hover: #f4f6fc;
  --border: #e2e6ef;
  --border-strong: #c8cee0;
  --text: #161a2c;
  --text-muted: #5a6585;
  --text-soft: #7a83a1;
  --accent: #2f6bd8;
  --accent-hover: #1f57bf;
  --accent-soft: rgba(47, 107, 216, 0.10);
  --ok: #1f9d57;
  --ok-soft: rgba(31, 157, 87, 0.10);
  --warn: #b6791f;
  --warn-soft: rgba(182, 121, 31, 0.12);
  --bad: #c4364f;
  --bad-soft: rgba(196, 54, 79, 0.10);
  --shadow: 0 4px 20px rgba(20, 25, 50, 0.08), 0 1px 4px rgba(20, 25, 50, 0.04);
  --shadow-soft: 0 2px 8px rgba(20, 25, 50, 0.05), 0 1px 3px rgba(20, 25, 50, 0.03);
  --shadow-glow: 0 0 20px rgba(47, 107, 216, 0.1), 0 0 40px rgba(47, 107, 216, 0.03);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* layout */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-medium);
}
.app-header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}
.brand:hover { opacity: 0.85; }
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 50%, #b06aff));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform var(--transition-spring), box-shadow var(--transition-medium);
}
.brand:hover .brand-mark {
  transform: scale(1.05) rotate(-2deg);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--accent) 45%, transparent);
}
.nav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  flex-wrap: wrap;
}
.nav a {
  padding: 7px 14px;
  border-radius: 10px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav a:hover { background: var(--surface-hover); color: var(--text); transform: translateY(-1px); }
.nav a.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 20%, transparent);
}
.nav a .nav-icon {
  width: 16px;
  height: 16px;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
  filter: brightness(0) invert(1);  /* safety net: force white for any nav SVG */
}
.nav a:hover .nav-icon,
.nav a.is-active .nav-icon { opacity: 1; }

.header-spacer { flex: 1; }

.nav .nav-logout {
  color: var(--text-soft);
}
.nav .nav-logout:hover { color: var(--bad); background: var(--bad-soft); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 24px 48px;
  animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.page-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.page-head h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  background: linear-gradient(135deg, var(--text), color-mix(in srgb, var(--text) 80%, var(--accent)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-head .page-meta {
  font-size: 13px;
  color: var(--text-muted);
}

.crumb {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

/* meta strip under header (root path + count) */
.meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 14px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12.5px;
  color: var(--text-muted);
  transition: border-color var(--transition-fast);
}
.meta-strip:hover { border-color: var(--border-strong); }
.meta-strip code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  background: var(--bg-elev-2);
  padding: 3px 8px;
  border-radius: 6px;
  word-break: break-all;
}
.meta-strip .meta-count {
  margin-left: auto;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
}

/* card (login + 410 pages) */
.card-page {
  min-height: calc(100vh - 56px);
  display: grid;
  place-items: center;
  padding: 32px 20px;
  position: relative;
}
.card-page::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.card-panel {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 32px 28px;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 1;
  animation: cardAppear 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}
.card-panel:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow), var(--shadow-glow);
}

@keyframes cardAppear {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.card-panel.is-wide { max-width: 520px; }
.card-panel .panel-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  font-size: 24px;
  background: var(--accent-soft);
  color: var(--accent);
  transition: transform var(--transition-spring);
}
.card-panel:hover .panel-icon { transform: scale(1.05) rotate(-3deg); }
.card-panel.is-bad .panel-icon { background: var(--bad-soft); color: var(--bad); }
.card-panel.is-warn .panel-icon { background: var(--warn-soft); color: var(--warn); }
.card-panel h2 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.015em;
}
.card-panel p {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}
.card-panel p:last-child { margin-bottom: 0; }

.alert {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 14px;
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: alertSlide 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes alertSlide {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

.alert.is-bad { color: var(--bad); background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 30%, transparent); }
.alert.is-ok { color: var(--ok); background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }

/* form controls */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.input,
input[type=text],
input[type=password],
input[type=email],
select {
  width: 100%;
  background: var(--bg-elev-1);
  color: var(--text);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}
.input:focus,
input[type=text]:focus,
input[type=password]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 16px color-mix(in srgb, var(--accent) 10%, transparent);
  background: var(--bg-elev-2);
  transform: translateY(-1px);
}
.input::placeholder { color: var(--text-soft); }

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238c97b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* file input styling */
input[type=file] {
  width: 100%;
  padding: 14px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-elev-1);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}
input[type=file]:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input[type=file]::file-selector-button {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  margin-right: 12px;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
input[type=file]::file-selector-button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* upload zone (visual hint above file input) */
.upload-zone {
  padding: 28px 20px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: 16px;
  background: color-mix(in srgb, var(--bg-elev-2) 50%, transparent);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.upload-zone:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.upload-zone-icon {
  font-size: 32px;
  margin-bottom: 10px;
  transition: transform var(--transition-spring);
}
.upload-zone:hover .upload-zone-icon { transform: scale(1.1) rotate(-5deg); }
.upload-zone-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
}
.upload-zone-hint {
  font-size: 12px;
  color: var(--text-muted);
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: var(--accent);
  color: #fff;
  border: 0;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 30%, transparent);
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.1));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 40%, transparent);
}
.btn:hover::after { opacity: 1; }
.btn:active { transform: translateY(0); }
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 0 1px var(--accent);
}
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }

.btn.is-block { width: 100%; }

.btn.is-secondary {
  background: var(--bg-elev-2);
  color: var(--text);
  border: 1.5px solid var(--border-strong);
  box-shadow: none;
}
.btn.is-secondary:hover { background: var(--surface-hover); box-shadow: var(--shadow-soft); }

.btn.is-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  box-shadow: none;
}
.btn.is-ghost:hover { background: var(--surface-hover); color: var(--text); }

.btn.is-danger {
  background: transparent;
  color: var(--bad);
  border: 1.5px solid color-mix(in srgb, var(--bad) 35%, transparent);
  box-shadow: none;
}
.btn.is-danger:hover {
  background: var(--bad-soft);
  color: var(--bad);
  border-color: color-mix(in srgb, var(--bad) 55%, transparent);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--bad) 20%, transparent);
}
.btn.is-danger:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--bad-soft), 0 0 0 1px var(--bad);
}

.btn.is-small { padding: 6px 12px; font-size: 12.5px; border-radius: 7px; }

/* tables */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.table-wrap:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.table-scroll { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 720px;
}
table.data thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 14px 16px;
  background: var(--bg-elev-1);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  transition: background var(--transition-fast);
}
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr { transition: background var(--transition-fast); }
table.data tbody tr:hover { background: var(--surface-hover); }

td.col-name { font-weight: 500; color: var(--text); }
td.col-name a { color: var(--text); text-decoration: none; transition: color var(--transition-fast); }
td.col-name a:hover { color: var(--accent); text-decoration: underline; }
td.col-name .file-rel {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-soft);
  margin-top: 4px;
  font-weight: 400;
}
td.col-name .file-icon {
  display: inline-block;
  margin-right: 8px;
  font-size: 16px;
  line-height: 1;
  width: 1.2em;
  text-align: center;
  vertical-align: -2px;
}

/* сортировка по дате */
.sort-link {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  margin: -4px -8px;
  border-radius: 6px;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.sort-link:hover {
  background: var(--bg-elev-2);
  color: var(--text);
}
.sort-link:hover .sort-arrow { color: var(--accent-hover); }
.sort-link:focus-visible {
  outline: none;
  background: var(--bg-elev-2);
  box-shadow: 0 0 0 2px var(--accent-soft), 0 0 0 1px var(--accent);
}
.sort-arrow {
  font-size: 10px;
  color: var(--accent);
  line-height: 1;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

td.col-size {
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  white-space: nowrap;
}
td.col-mtime {
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  font-size: 12.5px;
}
td.col-actions { white-space: nowrap; padding-right: 14px; display: flex; gap: 8px; align-items: center; flex-wrap: nowrap; }
th.col-views { text-align: right; }
.panel-actions { margin-top: 20px; }
td.col-actions form { display: inline-flex; gap: 6px; align-items: center; }

td.col-actions select {
  width: auto;
  padding: 6px 28px 6px 10px;
  font-size: 12.5px;
}
td.col-actions .btn.is-small { padding: 6px 14px; }
td.col-actions .btn.is-danger.is-small {
  min-width: 32px;
  padding: 6px 10px;
  font-size: 13px;
  line-height: 1;
}

/* share link list inside a row */
.links-cell { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.link-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
  max-width: 100%;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.link-chip:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 15%, transparent);
}
.link-chip code { all: unset; }
.link-chip .tok { font-weight: 500; }
.link-chip.is-expired { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, transparent); }
.link-chip.is-expired:hover { background: var(--bad-soft); border-color: var(--bad); }

.links-empty { color: var(--text-soft); font-size: 12.5px; font-style: italic; }

/* status badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  font-size: 11.5px;
  font-weight: 600;
  border-radius: 999px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform var(--transition-fast);
}
.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: currentColor;
}
.badge.is-ok {
  color: var(--ok);
  background: var(--ok-soft);
  border-color: color-mix(in srgb, var(--ok) 25%, transparent);
}
.badge.is-ok::before { animation: pulse-dot 2s infinite; }
.badge.is-warn { color: var(--warn); background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.badge.is-bad { color: var(--bad); background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 30%, transparent); }
.badge.is-muted { color: var(--text-muted); background: var(--bg-elev-2); border-color: var(--border); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* empty state */
.empty {
  padding: 64px 24px;
  text-align: center;
  color: var(--text-muted);
}
.empty .empty-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: var(--bg-elev-2);
  color: var(--text-soft);
  font-size: 24px;
  transition: transform var(--transition-spring);
}
.empty:hover .empty-icon { transform: scale(1.08) rotate(-5deg); }
.empty h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}
.empty p { margin: 0; font-size: 13px; line-height: 1.6; }

/* URL display in /shares table */
.url-cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 460px;
}
.url-cell a {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
  text-decoration: none;
  word-break: break-all;
  line-height: 1.4;
  transition: color var(--transition-fast);
}
.url-cell a:hover { text-decoration: underline; color: var(--accent-hover); }
.url-cell .url-meta {
  font-size: 11.5px;
  color: var(--text-soft);
  width: 100%;
}
.btn-copy-url {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-elev-1);
  color: var(--text-soft);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}
.btn-copy-url:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.08);
}
.btn-copy-url:active {
  transform: scale(0.95);
}
.btn-copy-url.is-copied {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 40%, transparent);
  background: var(--ok-soft);
}
.btn-copy-url svg { display: block; }

/* copy button column in shares table */
td.col-copy {
  width: 40px;
  text-align: center;
  vertical-align: middle;
  padding-left: 0;
  padding-right: 8px;
}
th.col-copy {
  width: 40px;
  padding-left: 0;
  padding-right: 8px;
}

td.col-by { color: var(--text-muted); font-size: 12.5px; }
td.col-views {
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  text-align: right;
}
td.col-exp {
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  white-space: nowrap;
}
td.col-exp.is-soon { color: var(--warn); }

/* footer */
.app-foot {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px 32px;
  font-size: 12px;
  color: var(--text-soft);
  text-align: center;
  opacity: 0.7;
}

/* copy button on share rows (pure CSS feedback) */
.copy-btn {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  padding: 0;
  font-size: 13px;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.copy-btn:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border-strong); transform: scale(1.05); }
.copy-btn.is-copied { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }

/* --- responsive --- */
@media (max-width: 720px) {
  .container { padding: 20px 14px 36px; }
  .app-header-inner { padding: 12px 14px; gap: 10px; }
  .page-head h1 { font-size: 20px; }
  .meta-strip { font-size: 12px; padding: 10px 12px; gap: 10px; }
  .meta-strip .meta-count { margin-left: 0; }
  table.data { font-size: 13px; min-width: 640px; }
  table.data thead th, table.data tbody td { padding: 10px 12px; }
  .btn { padding: 8px 14px; }
  .card-panel { padding: 24px 22px 22px; border-radius: var(--radius); }
  input[type=file] { padding: 10px; }
}

@media (max-width: 420px) {
  body { font-size: 13.5px; }
  .nav a { padding: 5px 9px; font-size: 12.5px; }
  .brand { font-size: 14px; }
  .brand-mark { width: 26px; height: 26px; font-size: 13px; }
  .card-panel { padding: 22px 18px 20px; }
  .card-panel h2 { font-size: 17px; }
  .meta-strip code { font-size: 11.5px; }
  .page-head h1 { font-size: 18px; }
}

/* respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ========== Inbox two-column layout (polished) ========== */
.inbox-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  align-items: start;
}
.inbox-col .card-panel {
  height: 100%;
  max-width: none;
  display: flex;
  flex-direction: column;
}
.inbox-col .card-panel > *:last-child {
  margin-bottom: 0;
}
@media (max-width: 720px) {
  .inbox-two-col {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ========== Upload zone drag-over (prominent feedback) ========== */
.upload-zone.is-dragover {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-soft);
  box-shadow:
    0 0 0 3px var(--accent-soft),
    0 0 24px color-mix(in srgb, var(--accent) 20%, transparent),
    inset 0 0 40px color-mix(in srgb, var(--accent) 5%, transparent);
  transform: scale(1.01);
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-spring);
}
.upload-zone.is-dragover .upload-zone-icon {
  transform: scale(1.2) rotate(-8deg);
  color: var(--accent);
}
.upload-zone.is-dragover .upload-zone-text {
  color: var(--accent);
  font-weight: 600;
}
.upload-zone.is-dragover .upload-zone-hint {
  color: var(--accent);
  opacity: 0.7;
}

/* ========== Download button polish ========== */
td.col-actions .btn.is-secondary.is-small {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  font-size: 13px;
  border-radius: 7px;
  border: 1.5px solid var(--border-strong);
  background: var(--bg-elev-2);
  color: var(--text-muted);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}
td.col-actions .btn.is-secondary.is-small:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 15%, transparent);
  transform: translateY(-1px);
}
td.col-actions .btn.is-secondary.is-small:active {
  transform: translateY(0);
}

/* ========== Create-file form polish ========== */
.inbox-col .card-panel textarea {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  background: var(--bg-elev-1);
  color: var(--text);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13.5px;
  font-family: var(--font-mono);
  line-height: 1.55;
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}
.inbox-col .card-panel textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 16px color-mix(in srgb, var(--accent) 10%, transparent);
  background: var(--bg-elev-2);
}
.inbox-col .card-panel textarea::placeholder {
  color: var(--text-soft);
  font-family: var(--font-sans);
}
.inbox-col .card-panel .field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.inbox-col .card-panel .field {
  margin-bottom: 14px;
}
.inbox-col .card-panel .btn {
  margin-top: 4px;
}