/**
 * Multi Tube Views (MTV) — Clean Minimalism Component Styles
 */

/* Hero Section */
.hero-section {
  padding: 4rem 0 3rem 0;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface);
  color: var(--accent-blue);
  border: 1px solid var(--border-strong);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

[data-theme="dark"] .hero-pill {
  background-color: var(--bg-surface);
  border-color: var(--border-subtle);
  color: var(--accent-blue);
}

.hero-title {
  max-width: 820px;
  margin: 0 auto 1rem auto;
  font-size: clamp(2.2rem, 4.2vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
}

.hero-description {
  max-width: 620px;
  margin: 0 auto 2rem auto;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* Directory Controls & Search */
.directory-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.directory-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.directory-header p {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.search-input-wrap {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-input {
  width: 100%;
  padding: 0.6rem 0.9rem 0.6rem 2.4rem;
  font-family: inherit;
  font-size: 0.88rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  transition: all var(--transition-speed) ease;
}

.search-input:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.12);
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Platform Directory Grid */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.platform-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease, background-color var(--transition-speed) ease;
  position: relative;
}

.platform-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
  background-color: var(--bg-hover);
  color: inherit;
}

.platform-card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}

.platform-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
  transition: transform var(--transition-speed) ease;
}

.platform-card:hover .platform-avatar {
  transform: scale(1.04);
}

.platform-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.platform-card-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.platform-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
}

.platform-open-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.embed-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.embed-badge-supported {
  background-color: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}

.embed-badge-restricted {
  background-color: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}

/* Platform Card Support Section */
.platform-support-section {
  margin-top: 0.5rem;
  margin-bottom: 0.85rem;
}

.support-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.support-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
}

.support-tag.supported {
  background-color: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}

.support-tag.restricted {
  background-color: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}

.support-tag.unsupported {
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

/* Dedicated Platform Supported Content Info Box */
.platform-support-infobox {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
}

.platform-support-infobox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.platform-support-infobox-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.platform-support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.platform-support-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* Breadcrumbs */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin: 1.25rem 0;
}

.breadcrumb-nav a {
  color: var(--text-muted);
}

.breadcrumb-nav a:hover {
  color: var(--text-primary);
}

.breadcrumb-separator {
  color: var(--border-strong);
  font-size: 0.75rem;
}

/* Tool Header */
.tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem 0 1.25rem 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.tool-identity {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.tool-avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  flex-shrink: 0;
}

.tool-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
  flex-wrap: wrap;
}

.tool-title {
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.tool-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.45rem;
}

.platform-support-chips {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}

/* Tool Panel — Unified Single Workflow Form */
.tool-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.75rem;
}

.input-section {
  margin-bottom: 1.25rem;
}

.input-group-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  color: var(--text-primary);
}

.input-hint {
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--text-muted);
}

.single-input-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.url-input-field {
  flex-grow: 1;
  padding: 0.65rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-speed) ease;
}

.url-input-field:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.12);
  outline: none;
}

/* Tool Settings Toolbar */
.settings-toolbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-subtle);
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.setting-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.setting-select {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-speed) ease;
}

.setting-select:focus {
  border-color: var(--border-focus);
}

/* Tool Actions Row */
.tool-actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.tool-secondary-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Player Stage / Grid */
.player-grid-section {
  margin-top: 1.5rem;
}

.stage-empty-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 1.5rem;
  text-align: center;
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.stage-empty-icon {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
  opacity: 0.85;
}

.stage-empty-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.stage-empty-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 440px;
  line-height: 1.5;
}

.player-grid {
  display: grid;
  gap: 1.25rem;
  width: 100%;
}

/* Dynamic Column Layouts */
.player-grid[data-cols="1"] { grid-template-columns: 1fr; }
.player-grid[data-cols="2"] { grid-template-columns: repeat(2, 1fr); }
.player-grid[data-cols="3"] { grid-template-columns: repeat(3, 1fr); }
.player-grid[data-cols="4"] { grid-template-columns: repeat(4, 1fr); }
.player-grid[data-cols="5"] { grid-template-columns: repeat(5, 1fr); }
.player-grid[data-cols="auto"] { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }

/* Player Card */
.player-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.player-card-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.85rem;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-secondary);
  gap: 0.5rem;
}

.player-bar-left {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  color: var(--text-primary);
  flex-wrap: wrap;
}

.player-badge-num {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background-color: var(--text-primary);
  color: var(--bg-surface);
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-slot-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.player-platform-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.12rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.slot-status-tag {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
}

.slot-status-tag.valid {
  background-color: var(--success-bg);
  color: var(--success-text);
}

.slot-status-tag.restricted {
  background-color: var(--warning-bg);
  color: var(--warning-text);
}

.player-bar-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-slot-action {
  width: 26px;
  height: 26px;
  padding: 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  text-decoration: none;
}

.btn-slot-action:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.slot-ratio-select {
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
}

/* Inline URL footer edit */
.player-card-footer-edit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.75rem;
}

.slot-url-display {
  flex-grow: 1;
  font-family: var(--font-mono);
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-slot-edit-trigger {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-blue);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.1rem 0.3rem;
}

.slot-inline-edit-input {
  flex-grow: 1;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-focus);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.player-bar-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.player-badge-num {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background-color: var(--text-primary);
  color: var(--bg-surface);
  font-size: 0.68rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-bar-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.player-frame-wrapper {
  position: relative;
  width: 100%;
  background-color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Aspect Ratio Modifiers */
.player-frame-wrapper[data-ratio="16-9"],
.player-frame-wrapper.ratio-16-9,
.player-frame-wrapper.ratio-video {
  aspect-ratio: 16 / 9;
  width: 100%;
}

.player-frame-wrapper[data-ratio="4-3"],
.player-frame-wrapper.ratio-4-3 {
  aspect-ratio: 4 / 3;
  width: 100%;
}

.player-frame-wrapper[data-ratio="1-1"],
.player-frame-wrapper.ratio-1-1,
.player-frame-wrapper.ratio-square {
  aspect-ratio: 1 / 1;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
}

.player-frame-wrapper[data-ratio="9-16"],
.player-frame-wrapper.ratio-9-16,
.player-frame-wrapper.ratio-vertical {
  aspect-ratio: 9 / 16;
  max-width: 360px;
  width: 100%;
  margin: 0 auto;
}

.player-frame-wrapper[data-ratio="auto"] {
  aspect-ratio: auto;
  min-height: 200px;
  width: 100%;
}

.player-frame-wrapper[data-ratio="auto"].ratio-video {
  aspect-ratio: 16 / 9;
  width: 100%;
}

.player-frame-wrapper[data-ratio="auto"].ratio-vertical {
  aspect-ratio: 9 / 16;
  max-width: 360px;
  width: 100%;
  margin: 0 auto;
}

.player-frame-wrapper[data-ratio="auto"].ratio-square {
  aspect-ratio: 1 / 1;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
}

.player-frame-wrapper[data-ratio="auto"].ratio-social-post {
  aspect-ratio: auto;
  min-height: 380px;
  height: 480px;
  max-width: 500px;
  width: 100%;
  margin: 0 auto;
}

.player-frame-wrapper[data-ratio="auto"].ratio-audio-spotify {
  aspect-ratio: auto;
  height: 152px;
  min-height: 152px;
  width: 100%;
}

.player-frame-wrapper[data-ratio="auto"].ratio-audio-spotify-large {
  aspect-ratio: auto;
  height: 352px;
  min-height: 352px;
  width: 100%;
}

.player-frame-wrapper[data-ratio="auto"].ratio-audio-soundcloud {
  aspect-ratio: auto;
  height: 166px;
  min-height: 166px;
  width: 100%;
}

.player-frame-wrapper[data-ratio="auto"].fallback-player-card {
  aspect-ratio: auto;
  height: auto;
  min-height: 220px;
  width: 100%;
}

.player-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* Restricted/Fallback Card in Player Grid */
.fallback-player-card {
  padding: 2.25rem 1.25rem;
  text-align: center;
  background-color: var(--bg-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  min-height: 220px;
}

.fallback-icon {
  font-size: 2.25rem;
  color: var(--warning-text);
  margin-bottom: 0.25rem;
}

.fallback-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.fallback-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  max-width: 320px;
  line-height: 1.5;
}

.fallback-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.25rem;
}

/* Independent Player Loading Overlay */
.player-frame-wrapper {
  position: relative;
}

.player-loading-overlay {
  position: absolute;
  inset: 0;
  background-color: var(--bg-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  z-index: 5;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  pointer-events: none;
}

.player-loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}

.player-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: player-spin 0.8s linear infinite;
}

.player-loading-text {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

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

/* Informational Callouts */
.info-callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  margin: 1.75rem 0;
}

.info-callout-icon {
  font-size: 1.2rem;
  color: var(--accent-blue);
  flex-shrink: 0;
}

.info-callout-content p {
  font-size: 0.88rem;
  margin-bottom: 0.4rem;
}

.info-callout-content p:last-child {
  margin-bottom: 0;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.75rem 0;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-speed) ease;
}

.faq-item:hover {
  border-color: var(--border-strong);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.15rem 1.35rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-answer {
  padding: 0 1.35rem 1.15rem 1.35rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius-md);
  font-size: 0.86rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  max-width: 360px;
}

.toast.success { border-color: var(--success-border); }
.toast.danger { border-color: var(--danger-border); }
.toast.warning { border-color: var(--warning-border); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(10px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Articles Section */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.article-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.article-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 0.65rem;
  letter-spacing: 0.08em;
}

.article-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.reading-content {
  max-width: 740px;
  margin: 0 auto;
  padding: 1.75rem 0;
}

.reading-content h2 {
  margin: 1.75rem 0 0.85rem 0;
}

.reading-content h3 {
  margin: 1.25rem 0 0.65rem 0;
}

.reading-content ul, .reading-content ol {
  margin: 0.85rem 0 1.25rem 1.25rem;
  color: var(--text-secondary);
}

.reading-content li {
  margin-bottom: 0.4rem;
}

/* ==========================================================================
   Contact Form & Feedback Components
   ========================================================================== */
.contact-page-header {
  margin-bottom: 1.5rem;
}

.contact-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.contact-subtitle {
  font-size: clamp(0.92rem, 2.5vw, 1.05rem);
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0;
}

.contact-form-container {
  width: 100%;
  margin: 0 auto 3.5rem auto;
}

.contact-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3.5vw, 2rem);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  width: 100%;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  width: 100%;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-label-req {
  color: var(--danger-text);
  margin-left: 0.2rem;
}

.form-label-hint {
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.95rem;
  font-family: inherit;
  font-size: 0.94rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-speed) ease;
  line-height: 1.45;
  min-height: 42px;
  box-sizing: border-box;
}

.form-control:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
  line-height: 1.5;
}

.form-control.is-invalid {
  border-color: var(--danger-text) !important;
  background-color: var(--danger-bg) !important;
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.2) !important;
}

.form-error-msg {
  font-size: 0.78rem;
  color: var(--danger-text);
  display: none;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.15rem;
  line-height: 1.35;
}

.form-error-msg.visible {
  display: flex;
}

.contact-submit-btn {
  width: 100%;
  padding: 0.75rem 1.5rem;
  font-size: 0.94rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  border: none;
  background-color: var(--accent-primary);
  color: var(--text-inverse);
  min-height: 44px;
  margin-top: 0.35rem;
  touch-action: manipulation;
}

.contact-submit-btn:hover:not(:disabled) {
  background-color: var(--accent-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.contact-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.contact-submit-btn .spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  display: none;
}

[data-theme="dark"] .contact-submit-btn .spinner {
  border-color: rgba(29, 29, 31, 0.3);
  border-top-color: #1D1D1F;
}

.contact-submit-btn.loading .spinner {
  display: inline-block;
}

.contact-submit-btn.loading .btn-icon {
  display: none;
}

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

/* Small, clean inline feedback message below form */
.contact-inline-status {
  margin-top: 0.25rem;
  width: 100%;
  animation: inline-msg-in 0.2s ease forwards;
}

@keyframes inline-msg-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.contact-inline-alert {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.95rem;
  border-radius: var(--radius-md);
  font-size: 0.84rem;
  line-height: 1.45;
}

.contact-inline-alert.success {
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

.contact-inline-alert.error {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
}

.inline-alert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.inline-alert-text {
  flex-grow: 1;
}

/* Mobile adjustments for Contact Form */
@media (max-width: 640px) {
  .contact-page-header {
    margin-bottom: 1.15rem;
  }
  
  .contact-card {
    padding: 1rem 0.95rem;
    border-radius: var(--radius-md);
  }

  .contact-form {
    gap: 0.95rem;
  }

  .form-group {
    gap: 0.3rem;
  }

  .form-label {
    font-size: 0.82rem;
  }

  .form-label-hint {
    font-size: 0.72rem;
  }

  .form-control {
    font-size: 16px; /* Prevents auto-zoom on iOS */
    padding: 0.55rem 0.75rem;
    min-height: 40px;
  }

  textarea.form-control {
    min-height: 105px;
  }

  .contact-submit-btn {
    font-size: 0.9rem;
    min-height: 44px;
    padding: 0.65rem 1.25rem;
  }

  .contact-inline-alert {
    padding: 0.55rem 0.75rem;
    font-size: 0.8rem;
  }
}