/* === Sungma — Sleek, High-Tech, Trust-Forward UI === */

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

:root {
  --bg: #050507;
  --bg-elevated: #0c0c10;
  --surface: #12121a;
  --surface-hover: #1a1a24;
  --border: #1e1e2a;
  --border-subtle: #16161f;
  --text: #eaeaf0;
  --text-secondary: #a0a0b0;
  --text-muted: #5a5a6e;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.15);
  --accent-dim: rgba(16, 185, 129, 0.06);
  --accent-hover: #0ea572;
  --danger: #f43f5e;
  --danger-glow: rgba(244, 63, 94, 0.15);
  --interview: #6366f1;
  --interview-glow: rgba(99, 102, 241, 0.15);
  --glass: rgba(12, 12, 16, 0.75);
  --glass-border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-top: env(safe-area-inset-top, 0px);
  --font: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hidden { display: none !important; }

/* === Loading Screen === */

.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.loading-content {
  text-align: center;
  padding: 2rem;
}

.loading-icon {
  margin-bottom: 2rem;
  position: relative;
}

.loading-icon::after {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  z-index: -1;
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.1); }
}

.loading-icon svg {
  animation: icon-spin 8s linear infinite;
  filter: drop-shadow(0 0 12px rgba(16, 185, 129, 0.3));
}

@keyframes icon-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
  letter-spacing: 0.04em;
}

.loading-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
}

.loading-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.loading-bar {
  width: 180px;
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  margin: 0 auto;
  overflow: hidden;
}

.loading-bar-fill {
  height: 100%;
  width: 30%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 1px;
  animation: loading-sweep 1.8s ease-in-out infinite;
}

@keyframes loading-sweep {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* === App Layout === */

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
}

/* === Header === */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 1rem;
  background: var(--bg);
  z-index: 10;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border-subtle);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.app-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: var(--accent-dim);
  border: 1px solid rgba(16, 185, 129, 0.12);
  border-radius: 20px;
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.trust-badge svg {
  width: 10px;
  height: 10px;
}

.header-right {
  display: flex;
  gap: 2px;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.icon-btn:active {
  background: var(--surface);
  color: var(--text);
  transform: scale(0.92);
}

.icon-btn:disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* === Viewfinder === */

.viewfinder-container {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  overflow: hidden;
}

.viewfinder-container video {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.viewfinder-container canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Viewfinder edge vignette */
.viewfinder-container::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.4);
}

.face-count {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border: 1px solid var(--glass-border);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: 0.02em;
  z-index: 2;
}

.recording-indicator {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border: 1px solid rgba(244, 63, 94, 0.2);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--danger);
  letter-spacing: 0.05em;
  z-index: 2;
}

.rec-dot {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 8px var(--danger);
  animation: rec-blink 1s ease-in-out infinite;
}

@keyframes rec-blink {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--danger); }
  50% { opacity: 0.3; box-shadow: 0 0 2px var(--danger); }
}

/* Camera overlay / prompt */

.camera-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  z-index: 5;
}

.camera-overlay-content {
  text-align: center;
  padding: 2rem;
  max-width: 300px;
}

.camera-overlay-content svg {
  margin-bottom: 1.25rem;
  filter: drop-shadow(0 0 16px rgba(16, 185, 129, 0.2));
}

.camera-overlay-content p {
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  font-size: 0.85rem;
  line-height: 1.5;
}

/* === Controls Area (below viewfinder) === */

.controls-area {
  flex-shrink: 0;
  background: var(--bg);
  border-top: 1px solid var(--border-subtle);
  padding-top: 2px;
}

/* === Quick Toggles Row === */

.quick-toggles {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.5rem 0.75rem 0.25rem;
  flex-wrap: wrap;
}

.distortion-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.distortion-toggle svg {
  width: 13px;
  height: 13px;
}

.distortion-toggle.active {
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.06);
}

.distortion-toggle:active {
  transform: scale(0.96);
}

/* === Cover Style Bar (on-screen pixelation control) === */

.cover-style-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
}

.cover-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border: none;
  border-radius: 20px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.cover-chip svg {
  flex-shrink: 0;
}

.cover-chip:active {
  transform: scale(0.95);
}

.cover-chip.active {
  background: var(--accent-dim);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.08);
}

/* === Action Bar === */

.action-bar {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.5rem 1rem 0.75rem;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.6rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  -webkit-tap-highlight-color: transparent;
}

.action-btn .btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  transition: all 0.2s ease;
}

.action-btn svg {
  width: 22px;
  height: 22px;
  transition: all 0.2s ease;
}

.action-btn:active .btn-icon {
  transform: scale(0.9);
}

/* Photo button — accent ring on press */
.photo-btn:active .btn-icon,
.photo-btn.active .btn-icon {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}
.photo-btn:active, .photo-btn.active {
  color: var(--accent);
}

/* Record button — special shutter style */
.record-btn .btn-icon {
  border-width: 3px;
}

.record-btn.recording .btn-icon {
  border-color: var(--danger);
  background: var(--danger-glow);
  box-shadow: 0 0 24px var(--danger-glow), 0 0 48px rgba(244, 63, 94, 0.06);
  animation: record-pulse 2s ease-in-out infinite;
}
.record-btn.recording {
  color: var(--danger);
}

@keyframes record-pulse {
  0%, 100% { box-shadow: 0 0 24px var(--danger-glow); }
  50% { box-shadow: 0 0 32px rgba(244, 63, 94, 0.25); }
}

.record-btn.recording svg {
  /* Morph circle icon to square for "stop" */
}

/* Audio button */
.audio-btn.recording .btn-icon {
  border-color: var(--danger);
  background: var(--danger-glow);
  box-shadow: 0 0 24px var(--danger-glow);
}
.audio-btn.recording {
  color: var(--danger);
}

/* Interview button */
.interview-btn.active .btn-icon {
  border-color: var(--interview);
  background: var(--interview-glow);
  box-shadow: 0 0 24px var(--interview-glow);
}
.interview-btn.active {
  color: var(--interview);
}

/* === Settings Panel === */

.settings-panel {
  position: fixed;
  inset: 0;
  z-index: 100;
  animation: fade-in 0.15s ease;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.settings-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.settings-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 85vh;
  background: var(--bg-elevated);
  border-radius: 20px 20px 0 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--safe-bottom);
  border-top: 1px solid var(--glass-border);
  animation: slide-up 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slide-up {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg-elevated);
  z-index: 1;
}

.settings-header h2 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.settings-body {
  padding: 0.25rem 1.5rem 2rem;
}

.setting-group {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.setting-group:last-child {
  border-bottom: none;
}

.setting-group h3 {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.875rem;
}

/* Toggle switch */

.setting-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text);
}

.setting-toggle input {
  display: none;
}

.toggle-slider {
  position: relative;
  width: 44px;
  height: 26px;
  background: var(--border);
  border-radius: 13px;
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--text);
  border-radius: 50%;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.setting-toggle input:checked + .toggle-slider {
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

.setting-toggle input:checked + .toggle-slider::after {
  transform: translateX(18px);
}

/* Radio options */

.setting-options {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

.radio-option input {
  display: none;
}

.radio-option:has(input:checked) {
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--accent);
  background: var(--accent-dim);
}

/* Setting text inputs */

.setting-input {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0.625rem 0;
}

.setting-input span {
  font-size: 0.875rem;
}

.setting-input input {
  width: 100%;
  padding: 11px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
  outline: none;
  transition: all 0.2s ease;
}

.setting-input input:focus {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.setting-input input::placeholder {
  color: var(--text-muted);
}

.about-text {
  font-size: 0.85rem;
  line-height: 1.6;
}

.about-text.muted {
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* === Preview Overlay === */

.preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  animation: fade-in 0.2s ease;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 1.5rem;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border-subtle);
}

.preview-header span:first-child {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.preview-size {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.preview-media {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow: hidden;
}

.preview-media img,
.preview-media video {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius);
  object-fit: contain;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.preview-media audio {
  width: 100%;
  max-width: 400px;
}

.preview-actions {
  display: flex;
  gap: 0.625rem;
  padding: 1rem 1.5rem;
  padding-bottom: calc(1.25rem + var(--safe-bottom));
  flex-shrink: 0;
}

/* === Buttons === */

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  flex: 1;
  padding: 14px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.01em;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:active {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:active {
  background: rgba(244, 63, 94, 0.06);
}

/* === Security Footer === */

.security-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0.375rem 1rem 0.5rem;
  flex-shrink: 0;
}

.security-footer svg {
  width: 10px;
  height: 10px;
  color: var(--text-muted);
  opacity: 0.6;
}

.security-footer span {
  font-size: 0.58rem;
  color: var(--text-muted);
  opacity: 0.6;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

/* === Responsive: larger screens === */

@media (min-width: 640px) {
  .viewfinder-container {
    max-width: 480px;
    margin: 0 auto;
    border-radius: var(--radius);
  }

  .controls-area {
    max-width: 480px;
    margin: 0 auto;
    border-top: none;
  }

  .action-bar {
    max-width: 480px;
    margin: 0 auto;
  }
}