/* ============================================================
   DocVerify – Global Stylesheet
   Light + Dark theme via data-theme attribute on <html>
   ============================================================ */

/* ── Light theme tokens ───────────────────────────────────── */
:root {
  --primary:        #1a73e8;
  --primary-dark:   #1558b0;
  --primary-light:  #e8f0fe;
  --success:        #1e8e3e;
  --success-light:  #e6f4ea;
  --danger:         #d93025;
  --danger-light:   #fce8e6;
  --warning:        #f29900;
  --warning-light:  #fef7e0;

  --bg:             #f8f9fa;
  --bg-card:        #ffffff;
  --bg-input:       #ffffff;
  --bg-table-head:  #f1f3f4;
  --bg-quote:       #1558b0;

  --text:           #202124;
  --text-muted:     #5f6368;
  --text-quote:     #ffffff;
  --border:         #dadce0;

  --shadow:         0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md:      0 4px 12px rgba(0,0,0,.12);

  --radius:         8px;
  --radius-lg:      12px;
  --font:           'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono:           'Cascadia Code', 'Fira Code', 'Courier New', monospace;

  --toggle-off:     #bdc1c6;
  --toggle-on:      var(--primary);
  --toggle-knob:    #ffffff;
}

/* ── Dark theme tokens ────────────────────────────────────── */
[data-theme="dark"] {
  --primary:        #8ab4f8;
  --primary-dark:   #669df6;
  --primary-light:  #1c2f4a;

  --success:        #81c995;
  --success-light:  #1a3a22;
  --danger:         #f28b82;
  --danger-light:   #3c1a18;
  --warning:        #fdd663;
  --warning-light:  #3b2f00;

  --bg:             #1a1a2e;
  --bg-card:        #16213e;
  --bg-input:       #1e2d45;
  --bg-table-head:  #0f1b2d;
  --bg-quote:       #0d1b2a;

  --text:           #e8eaed;
  --text-muted:     #9aa0a6;
  --text-quote:     #8ab4f8;
  --border:         #2d3748;

  --shadow:         0 1px 3px rgba(0,0,0,.4), 0 1px 2px rgba(0,0,0,.3);
  --shadow-md:      0 4px 12px rgba(0,0,0,.4);

  --toggle-off:     #5f6368;
  --toggle-knob:    #e8eaed;
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  transition: background .25s, color .25s;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Quote bar ────────────────────────────────────────────── */
.quote-bar {
  background: var(--bg-quote);
  color: var(--text-quote);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: .5rem;
  padding: .35rem 1.5rem;
  font-size: .78rem;
  letter-spacing: .01em;
  text-align: center;
  transition: background .25s;
}
.quote-text { opacity: .92; }
.quote-sep  { opacity: .4; }
.quote-url  {
  color: var(--text-quote);
  opacity: .75;
  font-family: var(--mono);
  font-size: .74rem;
  text-decoration: underline dotted;
}
.quote-url:hover { opacity: 1; }

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 54px;
  background: var(--primary-dark);
  color: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,.25);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background .25s;
}
[data-theme="dark"] .navbar { background: #0d1b2a; }
.navbar-brand { display: flex; align-items: center; gap: .5rem; font-size: 1.15rem; font-weight: 700; color: #fff; }
.brand-icon   { font-size: 1.3rem; }
.navbar-links { display: flex; align-items: center; gap: 1.1rem; }
.navbar-links a { color: rgba(255,255,255,.88); font-size: .9rem; font-weight: 500; }
.navbar-links a:hover { color: #fff; text-decoration: none; }
.btn-nav-logout {
  background: rgba(255,255,255,.12);
  padding: .28rem .8rem;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,.25);
}
.btn-nav-logout:hover { background: rgba(255,255,255,.22); }

/* ── Theme toggle button ──────────────────────────────────── */
.theme-toggle {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 20px;
  cursor: pointer;
  padding: .3rem .65rem;
  font-size: .95rem;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: .25rem;
  color: #fff;
  transition: background .15s;
}
.theme-toggle:hover { background: rgba(255,255,255,.22); }
.theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark  { display: inline; }

/* ── Main ─────────────────────────────────────────────────── */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: calc(100vh - 90px - 48px);
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: .75rem;
  font-size: .78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  transition: background .25s;
}

/* ── Flash alerts ─────────────────────────────────────────── */
.flash-container { margin-bottom: 1.25rem; }
.alert {
  padding: .75rem 1rem;
  border-radius: var(--radius);
  font-size: .88rem;
  margin-bottom: .5rem;
}
.alert-success  { background: var(--success-light); color: var(--success); border: 1px solid; border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.alert-danger   { background: var(--danger-light);  color: var(--danger);  border: 1px solid; border-color: color-mix(in srgb, var(--danger)  30%, transparent); }
.alert-warning  { background: var(--warning-light); color: var(--warning); border: 1px solid; border-color: color-mix(in srgb, var(--warning) 30%, transparent); }
.alert-info     { background: var(--primary-light); color: var(--primary); border: 1px solid; border-color: color-mix(in srgb, var(--primary) 30%, transparent); }

/* ── Card ─────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 1.5rem;
  transition: background .25s, border-color .25s;
}
.card-header {
  text-align: center;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
}
.card-header h2 { font-size: 1.4rem; margin: .4rem 0 .2rem; }
.card-header p  { color: var(--text-muted); font-size: .9rem; }
.card-icon { font-size: 2.5rem; display: block; }
.card-header-plain {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}
.card-header-plain h2 { font-size: 1.15rem; }

/* ── Page header ──────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.page-header h1 { font-size: 1.6rem; }
.page-header .sub { color: var(--text-muted); font-size: .88rem; margin-top: .2rem; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.1rem;
  border-radius: var(--radius);
  font-size: .88rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: filter .15s, background .15s;
  text-decoration: none !important;
  white-space: nowrap;
}
.btn:hover { filter: brightness(.92); }
.btn-primary  { background: var(--primary);  color: #fff !important; }
.btn-success  { background: var(--success);  color: #fff !important; }
.btn-danger   { background: var(--danger);   color: #fff !important; }
.btn-outline  {
  background: transparent;
  border-color: var(--border);
  color: var(--text) !important;
}
.btn-outline:hover { background: var(--bg); }
.btn-ghost    { background: transparent; color: var(--text-muted) !important; }
.btn-ghost:hover { background: var(--bg); }
.btn-full     { width: 100%; justify-content: center; }
.btn-sm       { padding: .28rem .7rem; font-size: .8rem; }

/* ── Forms ────────────────────────────────────────────────── */
.form-card    { max-width: 540px; margin: 0 auto; }
.auth-wrapper { display: flex; justify-content: center; align-items: flex-start; padding-top: 2rem; }
.auth-card    { max-width: 400px; width: 100%; }

.form-group   { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: .86rem;
  font-weight: 600;
  margin-bottom: .35rem;
  color: var(--text);
}
.form-control {
  width: 100%;
  padding: .55rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .92rem;
  font-family: var(--font);
  background: var(--bg-input);
  color: var(--text);
  transition: border-color .15s, box-shadow .15s, background .25s, color .25s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent);
}
.form-hint  { font-size: .78rem; color: var(--text-muted); margin-top: .3rem; }
.required   { color: var(--danger); }

.input-eye-wrap { position: relative; }
.input-eye-wrap .form-control { padding-right: 2.8rem; }
.eye-btn {
  position: absolute; right: .6rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 1rem; padding: .2rem;
  color: var(--text-muted);
}

.form-row    { margin-bottom: 1rem; }
.form-info   {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  font-size: .86rem;
  display: flex;
  gap: .5rem;
  color: var(--text);
  transition: background .25s;
}
.form-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.25rem; }
textarea.form-control { resize: vertical; }
.key-textarea { font-family: var(--mono); font-size: .74rem; height: 180px; }

/* ── Toggle switch ────────────────────────────────────────── */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--toggle-off);
  border-radius: 24px;
  transition: background .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background: var(--toggle-knob);
  border-radius: 50%;
  transition: transform .2s;
  box-shadow: 0 1px 3px rgba(0,0,0,.25);
}
.toggle-switch input:checked + .toggle-slider { background: var(--toggle-on); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(18px); }
.toggle-switch input:disabled + .toggle-slider { opacity: .55; cursor: not-allowed; }
.toggle-sm { width: 34px; height: 20px; }
.toggle-sm .toggle-slider::before { height: 14px; width: 14px; }
.toggle-sm input:checked + .toggle-slider::before { transform: translateX(14px); }

/* Public toggle row in upload form */
.toggle-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-top: 1rem;
  transition: background .25s, border-color .25s;
}
.toggle-label strong { font-size: .9rem; display: block; color: var(--text); }
.toggle-label p { font-size: .8rem; color: var(--text-muted); margin-top: .2rem; }

/* ── Table ────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .86rem; }
.table th {
  background: var(--bg-table-head);
  padding: .6rem .85rem;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  color: var(--text);
  transition: background .25s;
}
.table td { padding: .6rem .85rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: color-mix(in srgb, var(--primary) 5%, transparent); }

.mono  { font-family: var(--mono); font-size: .8rem; }
.ref   {
  background: var(--primary-light);
  color: var(--primary);
  padding: .2rem .5rem;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: .8rem;
}
.hash  { color: var(--text-muted); font-family: var(--mono); font-size: .8rem; }
.detail-cell {
  max-width: 260px;
  font-size: .8rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.actions-cell { display: flex; gap: .4rem; flex-wrap: wrap; align-items: center; }

/* ── Badges ───────────────────────────────────────────────── */
.badge         {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: .18rem .5rem;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-success { background: var(--success-light); color: var(--success); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.badge-warning { background: var(--warning-light); color: var(--warning); border-color: color-mix(in srgb, var(--warning) 30%, transparent); }
.badge-action  { background: var(--primary-light); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 30%, transparent); }

/* ── Stats row ────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: .5rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: background .25s, border-color .25s;
}
.stat-value { font-size: 1.45rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: .76rem; color: var(--text-muted); margin-top: .2rem; }

/* ── Upload zone ──────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: default;
  transition: border-color .2s, background .2s;
}
.upload-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}
.upload-icon  { font-size: 2.5rem; margin-bottom: .75rem; }
.upload-label { font-size: .98rem; font-weight: 600; margin-bottom: .2rem; }
.upload-sub   { color: var(--text-muted); font-size: .84rem; margin-bottom: .5rem; }
.upload-hint  { font-size: .76rem; color: var(--text-muted); margin-top: .75rem; }

.file-list  { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: .75rem; }
.file-item  {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: .86rem;
  background: var(--bg-card);
}
.file-item:last-child { border-bottom: none; }
.file-icon  { font-size: 1.05rem; flex-shrink: 0; }
.file-name  { flex: 1; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size  { color: var(--text-muted); white-space: nowrap; }

.process-info {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin-top: 1rem;
  transition: background .25s, border-color .25s;
}
.process-info h3 { font-size: .88rem; margin-bottom: .45rem; }
.process-steps { padding-left: 1.2rem; font-size: .83rem; color: var(--text-muted); }
.process-steps li { margin-bottom: .25rem; }

/* ── Private key card ─────────────────────────────────────── */
.key-card { max-width: 640px; margin: 0 auto; }
.key-alert {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--warning-light);
  border: 1px solid color-mix(in srgb, var(--warning) 40%, transparent);
  border-radius: var(--radius);
  padding: 1rem;
}
.key-alert-icon { font-size: 1.5rem; flex-shrink: 0; }

/* ── Verify page ──────────────────────────────────────────── */
.verify-wrapper { max-width: 700px; margin: 0 auto; }
.verify-info-card { margin-bottom: 1rem; }
.verify-header { text-align: center; margin-bottom: 1.5rem; }
.verify-icon   { font-size: 2.5rem; display: block; margin-bottom: .5rem; }
.verify-header h1 { font-size: 1.45rem; }
.verify-header p  { color: var(--text-muted); font-size: .88rem; }

.doc-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}
.meta-item {
  background: var(--bg);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  border: 1px solid var(--border);
  transition: background .25s, border-color .25s;
}
.meta-label {
  display: block;
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .2rem;
}
.meta-value { font-size: .93rem; font-weight: 500; color: var(--text); }

.verify-result {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.3rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  font-size: .93rem;
}
.result-valid    { background: var(--success-light); border: 1.5px solid color-mix(in srgb, var(--success) 35%, transparent); color: var(--success); }
.result-tampered { background: var(--danger-light);  border: 1.5px solid color-mix(in srgb, var(--danger)  35%, transparent); color: var(--danger); }
.result-icon     { font-size: 2rem; font-weight: 900; flex-shrink: 0; }

.verify-explainer h3 { font-size: .93rem; margin-bottom: .5rem; }

/* PDF preview iframe */
.pdf-preview-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: .5rem;
  background: var(--bg);
}
.pdf-preview {
  width: 100%;
  height: 520px;
  border: none;
  display: block;
}

/* ── Utilities ────────────────────────────────────────────── */
.hidden      { display: none !important; }
.mt-sm       { margin-top: .5rem; }
.mt-md       { margin-top: 1rem; }
.mt-lg       { margin-top: 1.5rem; }
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.divider     { border: none; border-top: 1px solid var(--border); margin: 1.25rem 0; }
.empty-state { text-align: center; padding: 2rem; color: var(--text-muted); font-size: .88rem; }

/* ── Auth page ────────────────────────────────────────────── */
.auth-wrapper { display: flex; justify-content: center; padding-top: 3rem; }
.auth-card { width: 100%; max-width: 400px; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 640px) {
  .navbar       { padding: 0 1rem; }
  .main-content { padding: 1rem; }
  .doc-meta-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .page-header { flex-direction: column; }
  .quote-bar { font-size: .72rem; padding: .3rem 1rem; }
  .pdf-preview { height: 340px; }
}
