:root {
  color-scheme: dark;
  --bg-primary: #131313;
  --bg-secondary: #1c1b1b;
  --bg-card: #201f1f;
  --bg-card-hover: #2a2a2a;
  --accent: #d4af37;
  --accent-2: #d4af37;
  --accent-glow: rgba(212, 175, 55, 0.28);
  --accent-dim: #d4af37;
  --text-primary: #e8e4df;
  --text-secondary: #b0aa9d;
  --text-muted: #7a746b;
  --border: #4d4635;
  --success: #5cb870;
  --radius: 16px;
  --control-radius: 12px;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  background: var(--bg-primary);
}

* {
  box-sizing: border-box;
}

.page-root {
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  min-height: 100vh;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Noto Sans SC', sans-serif;
  overflow-x: hidden;
  padding-bottom: calc(24px + var(--safe-area-bottom));
}

.paint-page-shell {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 14px 14px calc(28px + var(--safe-area-bottom));
}

.paint-top-nav {
  position: sticky;
  top: 0;
  z-index: 2100;
  height: calc(48px + var(--safe-area-top));
  padding: var(--safe-area-top) 12px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(153, 144, 124, 0.25);
  background: rgba(19, 19, 19, 0.92);
  backdrop-filter: blur(12px);
}

.paint-back-btn,
.paint-top-placeholder {
  width: 40px;
  height: 40px;
}

.paint-back-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-2);
  text-decoration: none;
  border-radius: 999px;
  background: rgba(32, 31, 31, 0.88);
  border: 1px solid rgba(153, 144, 124, 0.22);
}

.paint-back-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2.4;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.paint-top-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.main-container {
  max-width: 1320px;
  width: 100%;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  margin: 0 auto;
  box-shadow: none;
}

.glass-panel {
  background: linear-gradient(145deg, rgba(32, 31, 31, 0.82) 0%, rgba(19, 19, 19, 0.94) 100%);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 4px 20px rgba(0, 0, 0, 0.32);
}

.nav.nav-pills.paint-mode-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  margin-bottom: 18px;
  padding: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  justify-content: flex-start;
  width: max-content;
  max-width: 100%;
  background: rgba(28, 27, 27, 0.96);
  border: 1px solid rgba(153, 144, 124, 0.2);
  border-radius: var(--control-radius);
}

.nav.nav-pills.paint-mode-tabs::-webkit-scrollbar {
  display: none;
}

.nav.nav-pills.paint-mode-tabs .nav-item {
  min-width: 0;
  flex: 0 0 auto;
}

.paint-mode-tabs .nav-link {
  width: auto;
  min-height: 48px;
  min-width: 0;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
  word-break: keep-all;
  line-height: 1.35;
  font-size: 14px;
  font-weight: 500;
  background: transparent;
  border: 1px solid transparent;
  color: #d0c5af;
  border-radius: var(--control-radius);
  transition: all 0.25s;
}

.paint-mode-tabs .nav-link:hover {
  color: #d0c5af;
  border-color: transparent;
  background: rgba(53, 53, 52, 0.95);
}

.paint-mode-tabs .nav-link.active,
.paint-mode-tabs .show > .nav-link {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #3d2f00;
  border-color: transparent;
  box-shadow: none;
}

.tab-content > .tab-pane {
  padding: 2px 0;
}

.tab-content > .tab-pane.container {
  max-width: 100%;
  width: 100%;
  padding-left: 0;
  padding-right: 0;
}

.paint-workspace {
  display: grid;
  grid-template-columns: minmax(0, 450px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.paint-workspace-controls,
.paint-workspace-results {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.paint-workspace-results {
  position: sticky;
  top: calc(72px + var(--safe-area-top));
}

.paint-card {
  padding: 16px;
  border-radius: 16px;
}

.paint-card-spacious {
  padding: 20px;
}

.paint-card-head {
  margin-bottom: 14px;
}

.paint-card-title {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
}

.paint-section-title {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-primary);
}

.paint-section-icon {
  font-size: 24px;
  color: var(--accent);
  font-variation-settings: "FILL" 1;
}

.paint-card-text,
.section-tip {
  margin: 8px 0 0;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.65;
}

.paint-file-input {
  width: 100%;
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(153, 144, 124, 0.28);
  background: rgba(28, 27, 27, 0.95);
  color: var(--text-secondary);
}

.paint-file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(100%);
}

.paint-file-input::file-selector-button {
  margin-right: 12px;
  padding: 8px 14px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #eac249);
  color: #3d2f00;
  font-weight: 700;
}

.paint-form-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.paint-vector-form-stack {
  margin-bottom: 18px;
}

.paint-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.paint-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.paint-field-label {
  color: #bdb3a0;
  font-size: 14px;
  line-height: 1.45;
}

.paint-field-label-inline {
  margin: 0;
}

.paint-inline-field {
  display: flex;
  gap: 10px;
}

.paint-inline-field > * {
  min-width: 0;
}

.paint-inline-field .paint-input {
  flex: 1 1 auto;
}

.paint-inline-field .btn {
  flex: 0 0 auto;
}

.paint-input,
.paint-color-input,
.paint-segmented-control {
  min-height: 44px;
}

.paint-input,
.paint-color-input {
  border-radius: var(--control-radius);
}

.paint-color-input {
  max-width: 88px;
  padding: 4px;
}

.paint-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.paint-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.paint-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.paint-switch-track {
  position: relative;
  width: 46px;
  height: 26px;
  border-radius: var(--control-radius);
  background: #353534;
  border: 1px solid rgba(153, 144, 124, 0.2);
  transition: all 0.25s ease;
}

.paint-switch-track::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  transition: transform 0.25s ease;
  box-shadow: none;
}

.paint-switch input:checked + .paint-switch-track {
  background: var(--accent);
  border-color: var(--accent);
}

.paint-switch input:checked + .paint-switch-track::after {
  transform: translateX(20px);
}

.paint-segmented-control {
  display: flex;
  gap: 6px;
  padding: 4px;
  border-radius: var(--control-radius);
  border: 1px solid rgba(153, 144, 124, 0.28);
  background: rgba(28, 27, 27, 0.96);
}

.paint-segment {
  position: relative;
  flex: 1 1 0;
  margin: 0;
  cursor: pointer;
}

.paint-segment input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.paint-segment span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  border-radius: var(--control-radius);
  color: #ffffff;
  transition: all 0.2s ease;
}

.paint-segment input:checked + span {
  background: var(--accent);
  color: #3d2f00;
  box-shadow: none;
}

.paint-action-row .btn {
  min-width: 0;
  flex: 1 1 0;
}

.paint-action-card,
.paint-action-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.paint-vector-action-stack {
  margin-top: 2px;
}

.paint-main-action,
.paint-sub-action {
  min-height: 48px;
  border-radius: var(--control-radius);
  font-weight: 700;
}

.paint-main-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.glow-btn {
  background: linear-gradient(135deg, #f2ca50 0%, #eac249 100%);
  box-shadow: none;
  transition: all 0.3s ease;
}

.glow-btn:hover {
  transform: none;
}

.paint-results-card {
  min-height: 100%;
}

.paint-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.paint-result-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.paint-result-block-wide {
  grid-column: 1 / -1;
}

.paint-result-label {
  font-size: 14px;
  line-height: 1.4;
  color: #d0c5af;
  font-weight: 600;
}

.input-group-text,
.form-control,
.btn,
.form-check-label {
  font-size: 14px;
}

.btn,
.form-control {
  border-radius: var(--control-radius);
}

.input-group-text {
  background: rgba(28, 27, 27, 0.95);
  color: #d0c5af;
  border: 1px solid rgba(153, 144, 124, 0.35);
}

.form-control {
  background: rgba(28, 27, 27, 0.95);
  color: var(--text-primary);
  border: 1px solid rgba(153, 144, 124, 0.28);
}

.form-control:focus {
  background: rgba(28, 27, 27, 0.98);
  color: var(--text-primary);
  border-color: var(--accent);
  box-shadow: 0 0 0 0.18rem rgba(212, 175, 55, 0.18);
}

.form-check-input {
  cursor: pointer;
  border-color: var(--border);
  background-color: var(--bg-secondary);
}

.form-check-input:checked {
  background-color: var(--accent);
  border-color: var(--accent);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #3d2f00;
  border: none;
  box-shadow: none;
}

.btn-primary:hover,
.btn-primary:focus {
  color: #3d2f00;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  box-shadow: none;
}

.btn-secondary {
  background: rgba(28, 27, 27, 0.95);
  border: 1px solid rgba(153, 144, 124, 0.28);
  color: #d0c5af;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  background: rgba(53, 53, 52, 0.95);
}

.panel-box {
  min-height: 360px;
  border: 1px solid rgba(153, 144, 124, 0.22);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 10px;
  overflow: hidden;
  background: rgba(28, 27, 27, 0.98);
  color: rgba(229, 226, 225, 0.45);
}

.preview-tall {
  height: 400px;
}

.preview-square {
  aspect-ratio: 1 / 1;
  min-height: auto;
}

.paint-upload-shell {
  position: relative;
  display: block;
  cursor: pointer;
}

.paint-upload-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  border: 1px dashed rgba(242, 202, 80, 0.45);
  border-radius: var(--radius);
  background: rgba(242, 202, 80, 0.05);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.paint-upload-shell:hover .paint-upload-placeholder {
  border-color: rgba(212, 175, 55, 0.48);
  background: rgba(242, 202, 80, 0.08);
}

.paint-upload-preview {
  display: none;
}

.paint-upload-shell.has-image .paint-upload-placeholder {
  display: none;
}

.paint-upload-shell.has-image .paint-upload-preview {
  display: flex;
}

.paint-upload-dropzone {
  position: relative;
  cursor: pointer;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.paint-upload-shell:hover .paint-upload-dropzone {
  border-color: rgba(212, 175, 55, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 0 0 1px rgba(212, 175, 55, 0.1);
}

.paint-upload-shell:active .paint-upload-dropzone {
  transform: scale(0.998);
}

.paint-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px;
  color: rgba(229, 226, 225, 0.56);
  text-align: center;
  font-size: 14px;
}

.paint-empty-state-text {
  max-width: 220px;
}

.paint-upload-placeholder-icon {
  font-size: 40px;
  color: rgba(212, 175, 55, 0.85);
  font-variation-settings: "FILL" 1;
}

.paint-upload-placeholder-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

.paint-upload-placeholder-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.paint-upload-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 18px;
  border-radius: var(--control-radius);
  background: linear-gradient(135deg, #f2ca50 0%, #eac249 100%);
  color: #3d2f00;
  font-size: 14px;
  font-weight: 700;
  box-shadow: none;
  border: none;
  margin-top: 4px;
}

.paint-upload-cta .material-symbols-outlined {
  font-size: 18px;
  color: currentColor;
  font-variation-settings: "FILL" 1;
}

.paint-hidden-result {
  display: none;
}

.panel-box img,
.panel-box svg,
.panel-box canvas {
  max-width: 100%;
  max-height: 100%;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

.preview-actions {
  margin-top: -2px;
  margin-bottom: 4px;
}

.preview-actions .btn {
  min-width: 130px;
  width: 100%;
  border-radius: var(--control-radius);
  padding: 10px 14px;
}

.paint-save-btn {
  background: rgba(53, 53, 52, 0.92);
  border: 1px solid rgba(153, 144, 124, 0.24);
  color: var(--text-primary);
}

.download-btn {
  border: none;
  transition: all 0.2s;
}

.download-btn.download-btn-ready {
  background: linear-gradient(135deg, #64c77a, #49a861);
  color: #ffffff;
}

.download-btn.download-btn-ready:hover {
  filter: brightness(1.06);
}

.download-btn.download-btn-disabled,
.download-btn:disabled {
  background: #4b4f58;
  color: #9ca3ad;
  opacity: 1;
  cursor: not-allowed;
}

.rgb-list {
  width: 100%;
  max-height: 380px;
  overflow-y: auto;
  padding: 10px;
  background: #f8f8f8;
  color: #2d2d2d;
}

.rgb-list-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 2px;
  border-bottom: 1px solid #e4e4e4;
  font-size: 13px;
  line-height: 1.4;
}

.rgb-list-row:last-child {
  border-bottom: none;
}

.rgb-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.palette-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 6px;
  margin: 0;
}

.paint-palette-grid {
  margin-top: 28px !important;
  padding-top: 14px;
  border-top: 1px solid rgba(153, 144, 124, 0.12);
}

.palette-wrap > div {
  background: rgba(28, 27, 27, 0.95);
  border: 1px solid rgba(153, 144, 124, 0.28);
  border-radius: var(--control-radius);
  padding: 4px;
  color: #d0c5af;
}

.palette-wrap input[type='color'] {
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 8px;
  padding: 0;
  background: transparent;
}

.footer-note {
  margin: 10px 0;
  color: var(--text-secondary);
  font-size: 13px;
}

a {
  color: #7ec8ff;
}

a:hover {
  color: #a3ddff;
}

.modal-content {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

#waitModal {
  z-index: 3000;
}

#waitModal.show {
  display: flex !important;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.45);
}

#waitModal .modal-dialog {
  margin: 0;
  width: min(92vw, 420px);
}

.modal-backdrop {
  z-index: 2990;
}

.progress {
  background: var(--bg-secondary);
}

.progress-bar {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
}

.app-notice {
  position: fixed;
  left: 50%;
  bottom: calc(24px + var(--safe-area-bottom));
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  z-index: 4000;
  min-width: 180px;
  max-width: calc(100% - 32px);
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  font-size: 13px;
  text-align: center;
  transition: all 0.2s ease;
}

.app-notice.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

.app-notice-success {
  background: rgba(59, 170, 93, 0.95);
}

.app-notice-error {
  background: rgba(196, 74, 74, 0.96);
}

.auth-container {
  max-width: 520px;
}

.auth-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.auth-row {
  display: flex;
  gap: 8px;
}

.auth-row .form-control {
  flex: 1;
}

.auth-links {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.auth-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.auth-links a:hover {
  color: var(--text-primary);
}

@media (max-width: 1024px) {
  .paint-workspace {
    grid-template-columns: 1fr;
  }

  .paint-workspace-results {
    position: static;
  }
}

@media (max-width: 1024px) and (orientation: portrait) {
  .paint-page-shell {
    max-width: 920px;
    padding-inline: 18px;
  }

  .paint-card-spacious {
    padding: 22px;
  }

  .panel-box {
    min-height: 280px;
  }

  .preview-tall {
    height: 360px;
  }
}

@media (max-width: 768px) {
  .paint-page-shell {
    padding-inline: 10px;
  }

  .nav.nav-pills.paint-mode-tabs {
    display: flex;
  }

  .paint-result-grid {
    grid-template-columns: 1fr;
  }

  .paint-field-grid {
    grid-template-columns: 1fr;
  }

  .preview-tall {
    height: 320px;
  }
}

@media (max-width: 480px) {
  .paint-mode-tabs .nav-link {
    min-height: 50px;
    font-size: 13px;
    padding-inline: 16px;
  }

  .paint-card {
    padding: 14px;
  }

  .paint-card-spacious {
    padding: 16px;
  }

  .paint-section-title {
    font-size: 20px;
  }

  .paint-inline-field,
  .paint-switch-row {
    flex-direction: column;
    align-items: stretch;
  }

  .paint-inline-field .btn,
  .paint-inline-field .paint-input,
  .paint-color-input {
    width: 100%;
    max-width: none;
  }
}