/* ========================================================
   Palm Access — Biometric identification
   Theme: Light, clean, mobile-first
   ======================================================== */

:root {
  --bg:             oklch(97.5% 0.006 255);
  --surface:        oklch(100% 0 0);
  --surface-alt:    oklch(96% 0.006 255);

  --accent:         oklch(55% 0.18 265);
  --accent-subtle:  oklch(95% 0.05 265);
  --accent-border:  oklch(80% 0.10 265);

  --success:        oklch(52% 0.17 145);
  --success-subtle: oklch(95% 0.05 145);
  --success-border: oklch(78% 0.12 145);

  --error:          oklch(50% 0.20 22);
  --error-subtle:   oklch(96% 0.05 22);
  --error-border:   oklch(78% 0.14 22);

  --text-1:         oklch(18% 0.02 255);
  --text-2:         oklch(45% 0.03 255);
  --text-3:         oklch(65% 0.02 255);

  --border:         oklch(90% 0.012 255);
  --border-strong:  oklch(78% 0.02 255);

  --shadow:         0 1px 3px oklch(0% 0 0 / 0.08), 0 1px 2px oklch(0% 0 0 / 0.05);
  --shadow-md:      0 4px 8px oklch(0% 0 0 / 0.07), 0 2px 4px oklch(0% 0 0 / 0.05);

  --font:      'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;

  --radius:    10px;
  --radius-sm: 6px;
  --radius-xs: 4px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-1);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ──────────────────────────────────────────
   HEADER
────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 54px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  color: var(--accent);
  display: flex;
  align-items: center;
}

.header-brand {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

.brand-sub {
  font-size: 0.65rem;
  color: var(--text-3);
  margin-top: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-2);
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.status-dot.offline { background: var(--error); }

/* ──────────────────────────────────────────
   NAVIGATION
────────────────────────────────────────── */
.nav {
  display: flex;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 1rem;
  height: 44px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-3);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.nav-btn:hover { color: var(--text-2); }

.nav-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-btn svg { flex-shrink: 0; opacity: 0.7; }
.nav-btn.active svg { opacity: 1; }

/* ──────────────────────────────────────────
   MAIN / PANELS
────────────────────────────────────────── */
.main {
  padding: 1.5rem;
  min-height: calc(100dvh - 98px);
}

.panel { display: none; }
.panel.active { display: block; }

/* ──────────────────────────────────────────
   SCAN PANEL LAYOUT
────────────────────────────────────────── */
.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

/* ──────────────────────────────────────────
   CAMERA FRAME
────────────────────────────────────────── */
.camera-frame {
  position: relative;
  background: oklch(12% 0.01 255);
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: border-color 0.25s;
}

.camera-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scaleX(-1);
}

/* Landmark overlay canvas */
.overlay-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  transform: scaleX(-1);
}

/* Palm guide overlay */
.palm-guide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 3;
  pointer-events: none;
  transition: opacity 0.3s;
}

.guide-ring {
  border-radius: 50%;
  border: 1.5px dashed;
  position: absolute;
}

.guide-ring.outer {
  width: 52%;
  aspect-ratio: 1;
  border-color: oklch(100% 0 0 / 0.25);
}

.guide-ring.inner { display: none; }

.guide-label {
  position: absolute;
  bottom: 16%;
  font-size: 0.7rem;
  font-weight: 500;
  color: oklch(100% 0 0 / 0.5);
  letter-spacing: 0.02em;
}

/* Capture flash */
.capture-flash {
  position: absolute;
  inset: 0;
  background: transparent;
  pointer-events: none;
  z-index: 10;
}

.capture-flash.flash {
  animation: flash-frame 0.3s ease-out;
}

@keyframes flash-frame {
  0%   { background: oklch(100% 0 0 / 0.5); }
  100% { background: transparent; }
}

/* Camera status badge */
.camera-status {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.7rem;
  font-weight: 500;
  color: oklch(100% 0 0 / 0.85);
  z-index: 5;
  background: oklch(0% 0 0 / 0.4);
  padding: 4px 10px;
  border-radius: 100px;
  white-space: nowrap;
  backdrop-filter: blur(4px);
}

.cam-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}

/* Brightness quality indicator */
.brightness-badge {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  white-space: nowrap;
  z-index: 5;
  backdrop-filter: blur(4px);
  transition: opacity 0.2s;
  pointer-events: none;
}
.brightness-badge.bri-good   { background: oklch(52% 0.17 145 / 0.85); color: #fff; }
.brightness-badge.bri-dark   { background: oklch(35% 0.05 255 / 0.80); color: #fff; }
.brightness-badge.bri-bright { background: oklch(65% 0.16 55  / 0.85); color: #fff; }

/* Auto-scan countdown ring */
.autoscan-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(80px, 18%, 120px);
  aspect-ratio: 1;
  z-index: 6;
  pointer-events: none;
}

.ring-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-track {
  fill: none;
  stroke: oklch(100% 0 0 / 0.15);
  stroke-width: 6;
}

.ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 264;
  stroke-dashoffset: 264;
  transition: stroke-dashoffset 0.08s linear;
}

.ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 600;
  color: oklch(100% 0 0 / 0.9);
  letter-spacing: 0.02em;
}

/* Hand detected state */
.camera-frame.hand-detected {
  border-color: var(--accent-border);
}

/* Capture counter (register view) */
.capture-counter {
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: oklch(100% 0 0 / 0.85);
  background: oklch(0% 0 0 / 0.4);
  padding: 3px 10px;
  border-radius: 100px;
  z-index: 5;
  backdrop-filter: blur(4px);
}

/* ── Scan controls row ── */
.scan-controls {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

/* Both buttons share equal width — symmetric layout */
.scan-controls > button {
  flex: 1;
  margin-top: 0;
  width: auto;   /* override .btn's width: 100% */
}

.btn-mode {
  height: 44px;
  padding: 0 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  /* Override .btn defaults that don't apply here */
  width: auto;
  margin-top: 0;
}

.btn-mode.manual { color: var(--text-3); }

.btn-mode:hover {
  background: var(--surface-alt);
  color: var(--text-1);
}

/* ──────────────────────────────────────────
   BUTTONS
────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 1.25rem;
  height: 44px;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s, box-shadow 0.15s;
  border-radius: var(--radius-sm);
  width: 100%;
  margin-top: 10px;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: oklch(100% 0 0);
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.88;
  box-shadow: 0 4px 12px oklch(55% 0.18 265 / 0.35);
}

.btn-primary:active:not(:disabled) { opacity: 0.8; }

.btn-secondary {
  background: var(--surface);
  color: var(--accent);
  border: 1.5px solid var(--accent-border);
}

.btn-secondary:hover:not(:disabled) { background: var(--accent-subtle); }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
  width: auto;
  margin-top: 0;
}

.btn-ghost:hover {
  background: var(--surface-alt);
  color: var(--text-1);
}

/* ──────────────────────────────────────────
   RESULT CARD
────────────────────────────────────────── */
.result-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  flex: 1;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.result-card.allowed {
  border-color: var(--success-border);
  border-left: 4px solid var(--success);
  box-shadow: var(--shadow), 0 0 0 1px var(--success-border);
}

.result-card.denied {
  border-color: var(--error-border);
  border-left: 4px solid var(--error);
  box-shadow: var(--shadow), 0 0 0 1px var(--error-border);
}

/* Idle state */
.result-idle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 2rem;
  text-align: center;
}

.idle-icon { color: var(--text-3); }

.idle-text {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.65;
}

.idle-hint {
  font-size: 0.75rem;
  color: var(--text-3);
  background: var(--surface-alt);
  padding: 4px 14px;
  border-radius: 100px;
  font-weight: 500;
}

/* Result display */
.result-display {
  width: 100%;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.result-badge {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.badge-icon {
  font-size: 2rem;
  line-height: 1;
}

.badge-status {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
}

.badge-status.allowed { color: var(--success); }
.badge-status.denied  { color: var(--error); }

.result-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-1);
}

.result-name.allowed { color: var(--success); }
.result-name.denied  { color: var(--error); }

.result-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.meta-label {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-2);
}

/* Timing value stands out for quick evaluation */
.meta-timing {
  color: var(--accent);
  font-weight: 500;
  font-size: 0.9rem;
}

/* Scanning state — spinner */
.result-scanning {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 2rem;
}

.scan-animation {
  width: 36px;
  height: 36px;
}

.scan-line {
  width: 100%;
  height: 100%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.scanning-text {
  font-size: 0.875rem;
  color: var(--text-2);
  font-weight: 500;
}

/* ──────────────────────────────────────────
   MINI STATS
────────────────────────────────────────── */
.mini-stats {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.stat-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 8px;
  gap: 3px;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.6rem;
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-divider {
  width: 1px;
  background: var(--border);
  align-self: stretch;
}

/* ──────────────────────────────────────────
   REGISTER PANEL
────────────────────────────────────────── */
.register-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.reg-camera { aspect-ratio: 4/3; }

.register-form-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.form-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-1);
}

.form-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.6;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
}

.field-input {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-1);
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

.field-input::placeholder { color: var(--text-3); }

.field-input:focus {
  border-color: var(--accent-border);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

/* Capture progress dots */
.captures-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.captures-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
}

.capture-dots { display: flex; gap: 6px; }

.dot {
  width: 32px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  transition: background 0.2s;
}

.dot.filled { background: var(--accent); }

.register-hint {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.5;
}

.register-feedback {
  font-size: 0.85rem;
  min-height: 20px;
  transition: color 0.2s;
}

.register-feedback.success { color: var(--success); }
.register-feedback.error   { color: var(--error); }

/* ──────────────────────────────────────────
   LOG PANEL
────────────────────────────────────────── */
.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.log-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-1);
}

.log-table-wrap {
  max-width: 1000px;
  margin: 0 auto 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.log-table thead { background: var(--surface-alt); }

.log-table th {
  padding: 10px 14px;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  border-bottom: 1px solid var(--border);
}

.log-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
  vertical-align: middle;
}

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

.log-table tr:hover td { background: var(--surface-alt); }

.log-status {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
}

.log-status.allowed {
  color: var(--success);
  background: var(--success-subtle);
}

.log-status.denied {
  color: var(--error);
  background: var(--error-subtle);
}

.log-empty-row td { padding: 0; border: none; }

.log-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 3rem;
  color: var(--text-3);
  font-size: 0.875rem;
}

/* Users section */
.users-section {
  max-width: 1000px;
  margin: 0 auto;
}

.users-header { margin-bottom: 0.75rem; }

.users-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-2);
}

.users-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.users-empty {
  font-size: 0.875rem;
  color: var(--text-3);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 12px 6px 10px;
  font-size: 0.8rem;
  color: var(--text-2);
  transition: border-color 0.15s;
}

.user-chip:hover { border-color: var(--border-strong); }

.user-chip-name {
  color: var(--text-1);
  font-weight: 500;
}

.user-chip-delete {
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  padding: 0;
  line-height: 1;
  font-size: 16px;
  transition: color 0.15s;
}

.user-chip-delete:hover { color: var(--error); }

/* ──────────────────────────────────────────
   REGISTER ACTIONS ROW
────────────────────────────────────────── */
.register-actions {
  display: flex;
  gap: 8px;
}

.register-actions .btn-register {
  flex: 1;
  margin-top: 0;
}

.btn-reset-captures {
  flex-shrink: 0;
  width: auto;
  margin-top: 0;
  padding: 0 14px;
}

/* ──────────────────────────────────────────
   RESPONSIVE — Mobile first
────────────────────────────────────────── */
@media (max-width: 768px) {
  .main { padding: 1rem; }

  .panel-grid,
  .register-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .nav { padding: 0 0.25rem; }

  .nav-btn {
    flex: 1;
    justify-content: center;
    padding: 0 0.5rem;
    font-size: 0.8rem;
    gap: 5px;
  }

  .header { padding: 0 1rem; }
  .brand-sub { display: none; }

  .result-card { min-height: 220px; }

  /* Hide similarity column on small screens */
  .log-table th:nth-child(4),
  .log-table td:nth-child(4) { display: none; }

  .btn { height: 48px; font-size: 0.9rem; }
  .btn-mode { height: 48px; }
}

@media (max-width: 420px) {
  .stat-label { font-size: 0.55rem; }
  .nav-btn span { display: none; }
  .register-actions { flex-direction: column; }
  .btn-reset-captures { width: 100%; }
}

/* Short screens: reduce camera height so result is visible without scrolling */
@media (max-height: 700px) and (max-width: 768px) {
  .camera-frame { aspect-ratio: 16/10; }
  .result-card  { min-height: 160px; }
  .form-block   { padding: 1.25rem; gap: 1rem; }
}

/* Log table: horizontal scroll on narrow screens instead of clipping */
.log-table-wrap { overflow-x: auto; }
.log-table { min-width: 380px; }