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

:root {
  --bg: #edf2f7;
  --bg-deep: #e2e8f0;
  --surface: #ffffff;
  --surface-muted: #f6f8fb;
  --text: #1c2734;
  --text-subtle: #5c6b7a;
  --line: #d3dde8;
  --brand: #0f5db8;
  --brand-strong: #0b4c98;
  --brand-soft: #e9f1fb;
  --success: #13855b;
  --danger: #c74242;
  --warning: #bb7a0f;
  --info: #0b89a9;
  --shadow-sm: 0 1px 2px rgba(14, 29, 49, 0.06);
  --shadow-md: 0 10px 24px rgba(14, 29, 49, 0.08);
  --shadow-lg: 0 24px 48px rgba(14, 29, 49, 0.14);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --transition: 160ms ease;
  --control-h: 44px;

  /* Backward-compatible aliases */
  --primary-color: var(--brand);
  --primary-hover: var(--brand-strong);
  --secondary-color: #667789;
  --secondary-hover: #526274;
  --success-color: var(--success);
  --danger-color: var(--danger);
  --warning-color: var(--warning);
  --info-color: var(--info);
  --light-bg: var(--surface-muted);
  --dark-text: var(--text);
  --border-color: var(--line);
  --shadow: var(--shadow-sm);
  --border-radius: var(--radius-sm);
}

body {
  font-family: "Pretendard", "SUIT", "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  font-size: 16px;
  line-height: 1.58;
  color: var(--text);
  min-height: 100vh;
  margin: 0;
  padding: clamp(14px, 3vw, 28px);
  background:
    radial-gradient(circle at 8% 0%, #f8fbff 0%, transparent 36%),
    radial-gradient(circle at 100% 100%, #e4edf9 0%, transparent 32%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}

.app-version-footer {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 9999;
  font-size: 11px;
  color: rgba(28, 39, 52, 0.62);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(28, 39, 52, 0.1);
  border-radius: 999px;
  padding: 6px 10px;
  pointer-events: none;
  user-select: none;
  backdrop-filter: blur(8px);
}

.card {
  width: min(1080px, 100%);
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: clamp(18px, 3.6vw, 34px);
  animation: card-in 260ms ease;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h1,
h2,
h3 {
  color: var(--text);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(1.45rem, 3.8vw, 2rem);
  font-weight: 760;
  margin-bottom: 18px;
  line-height: 1.22;
}

h2 {
  font-size: clamp(1.2rem, 3.1vw, 1.5rem);
  font-weight: 700;
  margin-bottom: 12px;
}

h3 {
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
  font-weight: 650;
  margin-bottom: 10px;
}

.panel {
  background: linear-gradient(180deg, #ffffff 0%, #f9fbfd 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(14px, 2.4vw, 20px);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.row > * {
  flex: 1 1 auto;
}

.row.meta > .badge,
.row.meta > .pill {
  flex: 0 1 auto;
  max-width: 100%;
}

.row.actions > button,
.row.actions > .btn,
.row.actions > a,
.row.actions > .button-group {
  flex: 1 1 220px;
  min-width: 0;
}

.row.actions .button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
}

.row.actions .button-group button,
.row.actions .button-group .btn {
  flex: 1 1 180px;
  width: auto;
}

.row.status-row > * {
  flex: 1 1 100%;
}

button,
.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #fff;
  font: inherit;
  font-weight: 650;
  line-height: 1;
  min-height: var(--control-h);
  padding: 12px 16px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

button:hover:not(:disabled),
.btn:hover:not(:disabled) {
  background: var(--brand-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

button:active:not(:disabled),
.btn:active:not(:disabled) {
  transform: translateY(0);
}

button:disabled,
.btn:disabled {
  opacity: 0.56;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

button.secondary,
.btn-secondary {
  background: #fff;
  color: #27405f;
  border-color: #b5c7db;
}

button.secondary:hover:not(:disabled),
.btn-secondary:hover:not(:disabled) {
  background: #f2f7fc;
  color: #1f3654;
  border-color: #9cb6d0;
}

button.success,
.btn-success {
  background: var(--success);
}

button.success:hover:not(:disabled),
.btn-success:hover:not(:disabled) {
  background: #0f6d4a;
}

button.danger,
.btn-danger {
  background: var(--danger);
}

button.danger:hover:not(:disabled),
.btn-danger:hover:not(:disabled) {
  background: #ab3838;
}

.btn-primary {
  background: var(--brand);
}

input,
textarea,
select {
  width: 100%;
  min-height: var(--control-h);
  border: 1px solid #c8d4e2;
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  font: inherit;
  padding: 11px 12px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

input::placeholder,
textarea::placeholder {
  color: #8a99aa;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #81a7d3;
  box-shadow: 0 0 0 3px rgba(15, 93, 184, 0.12);
  background: #fff;
}

label {
  display: block;
  margin-bottom: 7px;
  color: #27384d;
  font-weight: 620;
}

input[type="checkbox"] {
  width: 16px;
  min-height: 16px;
  height: 16px;
  margin-right: 8px;
  padding: 0;
  cursor: pointer;
  accent-color: var(--brand);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 11px;
  background: #f4f8fc;
  border: 1px solid #c9d7e6;
  border-radius: 999px;
  color: #2b3f55;
  font-size: 13px;
  font-weight: 620;
  white-space: nowrap;
}

@media (min-width: 981px) {
  button,
  .btn,
  input,
  textarea,
  select {
    min-height: 30px;
    padding: 5px 9px;
    font-size: 12px;
    line-height: 1.2;
  }

  .badge {
    min-height: 30px;
    padding: 5px 10px;
    font-size: 12px;
    line-height: 1.2;
  }
}

.small {
  font-size: 13px;
  line-height: 1.56;
  color: var(--text-subtle);
}

code {
  background: #f0f4f8;
  border: 1px solid #d2dce8;
  border-radius: 6px;
  padding: 1px 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: #30445a;
  font-size: 13px;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 18px 0;
}

a {
  color: var(--brand);
  text-underline-offset: 2px;
}

a:hover {
  color: var(--brand-strong);
}

.video-container {
  margin-bottom: 20px;
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px;
}

.video-container video,
video {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  background: #000;
}

.video-controls {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.video-controls button,
.video-controls .btn {
  width: auto;
  flex: 1 1 180px;
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 14px;
  min-height: 180px;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid #d6e0ea;
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

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

.progress-container {
  width: 100%;
  max-width: 460px;
  margin: 14px 0;
}

.progress-bar {
  width: 100%;
  height: 9px;
  background: #dde6f0;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 9px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #2463ab, #0e88a7);
  border-radius: 999px;
  transition: width 0.25s ease;
}

.progress-text {
  text-align: center;
  font-size: 13px;
  color: #395069;
  font-weight: 600;
}

.progress-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
  margin-top: 12px;
}

.progress-step {
  text-align: center;
  font-size: 11px;
  color: #73849a;
  padding: 6px 4px;
  border-radius: 999px;
  background: #f2f6fa;
  border: 1px solid #d9e2ec;
}

.progress-step.active {
  color: #1f3e61;
  background: #e8f1fb;
  border-color: #aac6e4;
  font-weight: 650;
}

.progress-step.completed {
  color: #18533f;
  background: #e8f5ef;
  border-color: #a7d2c2;
}

.progress-step.completed::before {
  content: "\2713";
  margin-right: 4px;
}

.camera-progress {
  margin-bottom: 10px;
  padding: 11px;
  background: #f5f8fc;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}

.camera-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  gap: 10px;
}

.camera-progress-name {
  font-weight: 650;
}

.camera-progress-status {
  font-size: 12px;
  color: var(--text-subtle);
}

.camera-progress-bar {
  width: 100%;
  height: 6px;
  background: #dce5ef;
  border-radius: 99px;
  overflow: hidden;
}

.camera-progress-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, #19589f, #138f70);
  transition: width 0.25s ease;
}

.video-list-item {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  margin-bottom: 10px;
}

.video-list-item:hover {
  background: #f8fbff;
  border-color: #a7bfd9;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.video-list-item:active {
  transform: translateY(0);
}

.empty-state {
  padding: 28px 18px;
  text-align: center;
  color: #708199;
  border: 1px dashed #c0d0e1;
  border-radius: var(--radius-md);
  background: #f8fbff;
}

.text-center {
  text-align: center;
}

.mt-10 {
  margin-top: 10px;
}

.mt-20 {
  margin-top: 20px;
}

.mb-10 {
  margin-bottom: 10px;
}

.mb-20 {
  margin-bottom: 20px;
}

@media (max-width: 860px) {
  .row {
    align-items: stretch;
  }

  .row > * {
    flex: 1 1 100%;
  }

  button,
  .btn {
    width: 100%;
  }

  .row.meta > .badge,
  .row.meta > .pill {
    flex: 0 1 auto !important;
    width: auto !important;
  }

  .row.actions > button,
  .row.actions > .btn,
  .row.actions > a {
    width: auto !important;
    flex: 1 1 calc(50% - 6px) !important;
  }

  .row.actions .button-group button,
  .row.actions .button-group .btn {
    width: auto !important;
    flex: 1 1 calc(50% - 6px);
  }

  .video-controls {
    gap: 8px;
  }

  .video-controls button,
  .video-controls .btn {
    width: auto !important;
    flex: 1 1 calc(50% - 6px);
  }
}

@media (max-width: 980px) {
  h1 {
    font-size: clamp(1.32rem, 4.4vw, 1.72rem);
  }

  h2 {
    font-size: clamp(1.12rem, 3.4vw, 1.32rem);
  }

  h3 {
    font-size: clamp(1rem, 2.8vw, 1.12rem);
  }

  button,
  .btn,
  input,
  textarea,
  select {
    min-height: 40px;
    padding: 9px 12px;
    font-size: 0.9rem;
  }

  .badge {
    font-size: 12px;
    padding: 6px 9px;
  }
}

@media (max-width: 640px) {
  body {
    padding: 8px;
  }

  .card {
    border-radius: 12px;
    padding: 12px;
  }

  h1 {
    margin-bottom: 14px;
  }

  .panel {
    padding: 10px;
  }

  .row {
    gap: 8px;
    margin-bottom: 10px;
  }

  .row.meta > .badge,
  .row.meta > .pill {
    flex: 1 1 calc(50% - 4px) !important;
    text-align: center;
  }

  button,
  .btn,
  input,
  textarea,
  select {
    min-height: 36px;
    padding: 8px 10px;
    font-size: 0.86rem;
  }

  .badge {
    font-size: 11px;
    padding: 5px 8px;
    white-space: normal;
    text-align: center;
  }

  .progress-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .progress-step {
    font-size: 10px;
    padding: 5px 4px;
  }
}