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

:root {
  --bg:          #0f1117;
  --surface:     #1a1d27;
  --surface2:    #22263a;
  --border:      #2e3350;
  --accent:      #6c63ff;
  --accent-glow: rgba(108,99,255,.35);
  --accent2:     #00d4aa;
  --warn:        #f59e0b;
  --danger:      #ef4444;
  --text:        #e2e8f0;
  --muted:       #8892a4;
  --radius:      14px;
  --radius-sm:   8px;
  --shadow:      0 8px 32px rgba(0,0,0,.45);
  --trans:       .18s ease;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ──────────────────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -.02em;
  color: var(--text);
}

.logo svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.header-links {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.header-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
  transition: color var(--trans);
}
.header-links a:hover { color: var(--text); }

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transition: background var(--trans);
}
.dot.online  { background: #22c55e; box-shadow: 0 0 6px #22c55e; }
.dot.offline { background: var(--muted); }

/* ── Main layout ─────────────────────────────────────────────────── */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2.5rem 1rem 3rem;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

/* ── Card ────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  box-shadow: var(--shadow);
  animation: fadeUp .3s ease both;
}

@keyframes fadeUp {
  from { opacity:0; transform: translateY(14px); }
  to   { opacity:1; transform: translateY(0); }
}

.card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .35rem;
}

.subtitle {
  color: var(--muted);
  font-size: .88rem;
  margin-bottom: 1.5rem;
}

/* ── Drop zone ───────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  transition: border-color var(--trans), background var(--trans);
  cursor: pointer;
  outline: none;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  position: relative;
  overflow: hidden;
}

.drop-zone:hover,
.drop-zone:focus,
.drop-zone.over {
  border-color: var(--accent);
  background: rgba(108,99,255,.06);
}

.drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  padding: 2rem;
  text-align: center;
  pointer-events: none;
}

.drop-inner > * { pointer-events: auto; }

.drop-inner svg {
  width: 52px;
  height: 52px;
  color: var(--muted);
  margin-bottom: .2rem;
}

.drop-inner p { color: var(--text); font-weight: 500; }

.drop-inner span { color: var(--muted); font-size: .82rem; }

/* Preview */
.preview-wrap {
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .75rem;
  position: relative;
}

.preview-wrap img {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.clear-btn {
  position: absolute;
  top: .5rem;
  right: .5rem;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,.6);
  color: #fff;
  font-size: .9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--trans);
}
.clear-btn:hover { background: var(--danger); }

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .62rem 1.4rem;
  border-radius: var(--radius-sm);
  border: none;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--trans), opacity var(--trans), transform var(--trans);
  text-decoration: none;
}

.btn:active:not(:disabled) { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
  justify-content: center;
  font-size: .95rem;
  padding: .78rem;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover:not(:disabled) { background: #7c75ff; }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-warn {
  background: var(--warn);
  color: #000;
  white-space: nowrap;
}
.btn-warn:hover:not(:disabled) { background: #fbbf24; }

.btn-icon {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: .55rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.btn-icon:hover { color: var(--text); border-color: var(--accent); }
.btn-icon svg { width: 18px; height: 18px; display: block; }

/* ── Spinner ─────────────────────────────────────────────────────── */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255,255,255,.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

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

/* ── Result card ─────────────────────────────────────────────────── */
.result-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.result-text {
  flex: 1;
  font-family: 'Courier New', monospace;
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent2);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .6rem 1rem;
  min-height: 64px;
  display: flex;
  align-items: center;
  word-break: break-all;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 1.6rem;
  flex-wrap: wrap;
}

.confidence-bar-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: .7rem;
  min-width: 220px;
}

.confidence-bar-wrap label {
  font-size: .8rem;
  color: var(--muted);
  white-space: nowrap;
}

.bar-track {
  flex: 1;
  height: 8px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width .5s cubic-bezier(.4,0,.2,1), background .5s;
}

#conf-value {
  font-size: .82rem;
  color: var(--muted);
  min-width: 42px;
  text-align: right;
}

.badge {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .28rem .75rem;
  border-radius: 99px;
  border: 1.5px solid;
}

.badge.crnn     { color: var(--accent);  border-color: var(--accent); }
.badge.easyocr  { color: var(--accent2); border-color: var(--accent2); }
.badge.ensemble { color: var(--warn);    border-color: var(--warn); }

/* ── Feedback section ────────────────────────────────────────────── */
.feedback-section {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.feedback-prompt {
  font-size: .88rem;
  color: var(--muted);
  margin-bottom: .75rem;
}

.feedback-row {
  display: flex;
  gap: .7rem;
}

.feedback-row input {
  flex: 1;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .62rem .9rem;
  color: var(--text);
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  letter-spacing: .08em;
  outline: none;
  transition: border-color var(--trans);
}

.feedback-row input:focus {
  border-color: var(--warn);
}

.feedback-note {
  font-size: .75rem;
  color: var(--muted);
  margin-top: .6rem;
}

/* ── Batch results ───────────────────────────────────────────────── */
.batch-results {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.batch-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: .8rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .6rem .9rem;
}

.batch-item img {
  width: 80px;
  height: 44px;
  object-fit: contain;
  border-radius: 4px;
  background: #fff;
}

.batch-item .b-text {
  font-family: 'Courier New', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--accent2);
}

.batch-item .b-text.loading {
  color: var(--muted);
  font-style: italic;
  font-size: .9rem;
  letter-spacing: 0;
}

.batch-item .b-text.error {
  color: var(--danger);
  font-size: .82rem;
  font-style: italic;
}

.batch-item .b-conf {
  font-size: .78rem;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
}

/* ── Toasts ──────────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .7rem 1.1rem;
  font-size: .88rem;
  box-shadow: var(--shadow);
  animation: slideIn .25s ease;
  pointer-events: auto;
  max-width: 320px;
  display: flex;
  align-items: center;
  gap: .6rem;
}

.toast.success { border-left: 3px solid #22c55e; }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.info    { border-left: 3px solid var(--accent); }

@keyframes slideIn {
  from { opacity:0; transform: translateX(24px); }
  to   { opacity:1; transform: translateX(0); }
}

/* ── Training status banner ──────────────────────────────────────── */
.train-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(520px, calc(100vw - 2rem));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 200;
  overflow: hidden;
  animation: fadeUp .3s ease both;
  transition: border-color .3s;
}

.train-banner.state-queued   { border-color: var(--warn); }
.train-banner.state-training { border-color: var(--accent); }
.train-banner.state-done     { border-color: #22c55e; }
.train-banner.state-error    { border-color: var(--danger); }

.train-banner-inner {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: .85rem 1.1rem;
}

.train-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  line-height: 1;
}

.train-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .1rem;
  min-width: 0;
}

#train-status-label {
  font-size: .88rem;
  font-weight: 700;
  color: var(--text);
}

.train-progress {
  font-size: .78rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.train-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .15rem;
  flex-shrink: 0;
  font-size: .75rem;
  color: var(--muted);
  white-space: nowrap;
}

.train-meta span:first-child { color: var(--accent2); font-weight: 700; }

/* indeterminate progress bar shown while training */
.train-progress-bar {
  height: 3px;
  background: var(--surface2);
  position: relative;
  overflow: hidden;
}

.train-progress-fill {
  position: absolute;
  top: 0; left: -40%;
  width: 40%;
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  animation: indeterminate 1.4s ease infinite;
}

@keyframes indeterminate {
  0%   { left: -40%; }
  100% { left: 100%; }
}

/* ── Login page ──────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 1rem;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
  animation: fadeUp .3s ease both;
}

.login-logo {
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

.login-box h2 { font-size: 1.25rem; margin-bottom: .25rem; }
.login-box .subtitle { margin-bottom: 1.5rem; }

.field {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: 1rem;
}

.field label { font-size: .82rem; color: var(--muted); font-weight: 600; }

.field input {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .65rem .9rem;
  color: var(--text);
  font-size: .95rem;
  outline: none;
  transition: border-color var(--trans);
  width: 100%;
}
.field input:focus { border-color: var(--accent); }

.pass-wrap { position: relative; }
.pass-wrap input { padding-right: 2.8rem; }
.show-pass {
  position: absolute;
  right: .6rem; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  cursor: pointer; font-size: 1rem;
  padding: .2rem;
  opacity: .6;
  transition: opacity var(--trans);
}
.show-pass:hover { opacity: 1; }

.field-error {
  color: var(--danger);
  font-size: .82rem;
  margin-top: -.4rem;
  margin-bottom: .6rem;
}

/* ── Header nav ──────────────────────────────────────────────────── */
.header-nav {
  display: flex;
  gap: .25rem;
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: .88rem;
  font-weight: 600;
  padding: .45rem .85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--trans), color var(--trans);
}
.nav-btn:hover  { background: var(--surface2); color: var(--text); }
.nav-btn.active { background: var(--surface2); color: var(--text); }

.header-right {
  display: flex;
  align-items: center;
  gap: .85rem;
}

.header-link {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
  transition: color var(--trans);
}
.header-link:hover { color: var(--text); }

.user-badge {
  font-size: .78rem;
  color: var(--muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: .25rem .7rem;
  white-space: nowrap;
}

.btn-logout {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: var(--radius-sm);
  padding: .35rem .6rem;
  cursor: pointer;
  font-size: 1rem;
  transition: background var(--trans), color var(--trans), border-color var(--trans);
}
.btn-logout:hover { background: var(--danger); color: #fff; border-color: var(--danger); }

/* ── Section header ──────────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  gap: 1rem;
}

.btn.sm { padding: .45rem .9rem; font-size: .82rem; }

/* ── Create key / user form ──────────────────────────────────────── */
.create-key-form {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-items: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .8rem 1rem;
  margin-bottom: 1rem;
}

.create-key-form input,
.create-key-form select {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .5rem .8rem;
  color: var(--text);
  font-size: .88rem;
  outline: none;
  flex: 1;
  min-width: 140px;
  transition: border-color var(--trans);
}
.create-key-form input:focus,
.create-key-form select:focus { border-color: var(--accent); }

/* ── Key reveal ──────────────────────────────────────────────────── */
.key-reveal {
  background: rgba(245,158,11,.08);
  border: 1.5px solid var(--warn);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  margin-bottom: 1rem;
}

.key-reveal-title {
  font-size: .82rem;
  font-weight: 700;
  color: var(--warn);
  margin-bottom: .6rem;
}

.key-reveal-row {
  display: flex;
  align-items: center;
  gap: .7rem;
}

.key-reveal-row code {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .5rem .8rem;
  font-family: 'Courier New', monospace;
  font-size: .88rem;
  word-break: break-all;
  color: var(--accent2);
}

/* ── Key / User rows ─────────────────────────────────────────────── */
.keys-list {
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.key-row {
  display: flex;
  align-items: center;
  gap: .8rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .7rem 1rem;
  flex-wrap: wrap;
}

.key-info {
  flex: 1;
  display: flex;
  align-items: center;
  gap: .7rem;
  min-width: 160px;
}

.key-name {
  font-weight: 700;
  font-size: .9rem;
}

.key-preview {
  font-family: 'Courier New', monospace;
  font-size: .8rem;
  color: var(--muted);
  background: var(--bg);
  padding: .15rem .5rem;
  border-radius: 4px;
}

.key-meta {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
  font-size: .78rem;
  color: var(--muted);
}

.key-status.active  { color: #22c55e; }
.key-status.revoked { color: var(--danger); }

.btn-danger {
  background: transparent;
  border: 1.5px solid var(--danger);
  color: var(--danger);
  border-radius: var(--radius-sm);
  padding: .35rem .75rem;
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--trans), color var(--trans);
  white-space: nowrap;
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.loading-text, .empty-text { color: var(--muted); font-size: .88rem; padding: .5rem 0; }
.error-text   { color: var(--danger); font-size: .88rem; }

/* badge variants for roles */
.badge.admin { color: var(--accent); border-color: var(--accent); }
.badge.user  { color: var(--muted);  border-color: var(--muted); }

code { font-family: 'Courier New', monospace; }

/* ── Utilities ───────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 520px) {
  header { padding: 0 1rem; }
  .card  { padding: 1.4rem; }

  .result-text { font-size: 1.6rem; }

  .feedback-row { flex-direction: column; }
  .feedback-row .btn { width: 100%; justify-content: center; }

  .batch-item { grid-template-columns: 60px 1fr; }
  .batch-item .b-conf { display: none; }
}