/**
 * CBD COA Library - Frontend Styles
 * Premium 2025 Design System v2.0
 * Clean, Calm, Professional
 *
 * @package CBD_COA_Library
 * @since 1.0.4
 */

/* ==========================================================================
   Design Tokens
   ========================================================================== */

:root {
  /* Brand Primary Palette */
  --coa-primary: #89af8b;
  --coa-primary-light: #acc7ae;
  --coa-primary-lighter: #eef4ef;
  --coa-primary-dark: #6a8f6c;

  /* Brand Secondary Palette */
  --coa-secondary: #8a7d75;
  --coa-secondary-light: #bfaa97;
  --coa-secondary-dark: #806f67;

  /* CTA Color */
  --coa-cta: #ff934f;

  /* Neutral Palette */
  --coa-white: #ffffff;
  --coa-surface: #eef4ef;
  --coa-border: rgba(0, 0, 0, 0.08);
  --coa-border-strong: rgba(0, 0, 0, 0.12);

  /* Text Colors */
  --coa-text: #000000;
  --coa-text-secondary: #4e4e4e;
  --coa-text-muted: #705222;

  /* Semantic Colors */
  --coa-success: #89af8b;
  --coa-success-bg: #eef4ef;
  --coa-warning: #705222;
  --coa-warning-bg: rgba(112, 82, 34, 0.08);

  /* Typography Scale - Desktop minimum 14px */
  --font-sm: 14px;
  --font-base: 15px;
  --font-md: 17px;
  --font-lg: 22px;
  --font-xl: 28px;

  /* Font Family */
  --font-family: "canada-type-gibson", -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;

  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 100px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 200ms;
}

/* ==========================================================================
   Base
   ========================================================================== */

.coa {
  max-width: 880px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-8);
  font-family: var(--font-family);
  font-size: var(--font-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--coa-text-secondary);
  -webkit-font-smoothing: antialiased;
}

.coa h1 {
  font-size: var(--font-xl);
  font-weight: 500;
  color: var(--coa-text);
  line-height: 1.25;
  margin: 0;
  letter-spacing: -0.02em;
}

.coa h2 {
  font-size: var(--font-lg);
  font-weight: 500;
  color: var(--coa-text);
  line-height: 1.3;
  margin: 0 0 var(--space-4);
}

.coa h3 {
  font-size: var(--font-md);
  font-weight: 500;
  color: var(--coa-text);
  margin: 0 0 var(--space-2);
}

.coa p {
  margin: 0 0 var(--space-4);
}

.coa a {
  color: var(--coa-primary);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.coa a:hover {
  color: var(--coa-primary-dark);
}

/* ==========================================================================
   Buttons - Sleek & Consistent
   ========================================================================== */

.coa button,
.coa .coa-btn {
  appearance: none;
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
}

.coa-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
}

.coa-btn.primary {
  background: var(--coa-primary);
  color: var(--coa-white);
  box-shadow: var(--shadow-sm);
}

.coa-btn.primary:hover {
  background: var(--coa-primary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.coa-btn.primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.coa-btn.secondary {
  background: var(--coa-white);
  color: var(--coa-text-secondary);
  border: 2px solid #d1d5db;
  box-shadow: var(--shadow-sm);
}

.coa-btn.secondary:hover {
  background: var(--coa-surface);
  border-color: var(--coa-primary);
  color: var(--coa-primary-dark);
  transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.coa-hero {
  background: var(--coa-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-5);
  align-items: start;
  margin-bottom: var(--space-6);
  border: 1px solid var(--coa-border);
  box-shadow: var(--shadow-sm);
}

.coa-hero-media {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--coa-surface);
  border: 1px solid var(--coa-border);
}

.coa-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration) var(--ease);
}

.coa-hero-media:hover img {
  transform: scale(1.03);
}

/* Hero clickable links */
a.coa-hero-media {
  text-decoration: none;
}

.coa-hero-title-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.coa-hero-title-link:hover {
  color: var(--coa-primary);
}

.coa-context-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--coa-text-muted);
  margin: 0 0 var(--space-1);
}

.coa-context-label::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--coa-primary);
}

.coa-status {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: var(--space-3) 0;
}

.coa-status > div {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text-secondary);
}

.coa-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--coa-success-bg);
  color: var(--coa-success);
  border-radius: var(--radius-full);
  font-size: var(--font-sm);
  font-weight: 500;
  width: fit-content;
}

.coa-key-metrics {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.coa-key-metrics li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-sm);
  color: var(--coa-text-secondary);
}

.coa-key-metrics li::before {
  content: "✓";
  color: var(--coa-success);
  font-weight: 600;
  font-size: var(--font-sm);
}

.coa-hero-downloads,
.coa-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.coa-btn-product::before {
  content: "→";
  font-size: 16px;
  font-weight: 600;
}

.coa-details-line {
  margin-top: var(--space-3);
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
}

.coa-progress {
  display: none;
}

/* ==========================================================================
   Summary Card
   ========================================================================== */

.coa-summary-card {
  background: var(--coa-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid var(--coa-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-6);
}

.coa-summary-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--coa-border);
}

.coa-summary-header h2 {
  margin: 0;
}

.coa-summary-subtitle {
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
  margin-top: var(--space-1);
}

.coa-summary-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.coa-summary-metrics > div {
  padding: var(--space-3) var(--space-4);
  background: var(--coa-surface);
  border-radius: var(--radius-sm);
  transition: background var(--duration) var(--ease);
}

.coa-summary-metrics > div:hover {
  background: var(--coa-primary-lighter);
}

/* Primary metrics (CBD & THC) */
.coa-summary-metrics > div:nth-child(1),
.coa-summary-metrics > div:nth-child(2) {
  background: var(--coa-primary-lighter);
  border: 1px solid rgba(137, 175, 139, 0.15);
}

.coa-summary-metrics > div:nth-child(1) span,
.coa-summary-metrics > div:nth-child(2) span {
  font-size: var(--font-md);
  font-weight: 600;
}

.coa-summary-metrics > div strong {
  display: block;
  font-size: var(--font-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--coa-text-muted);
  margin-bottom: var(--space-1);
}

.coa-summary-metrics > div span {
  display: block;
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text);
  font-variant-numeric: tabular-nums;
}

.coa-uncertainty-note {
  margin-top: 0;
  padding: var(--space-3) var(--space-4);
  background: var(--coa-warning-bg);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  color: var(--coa-text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   How-To Section
   ========================================================================== */

.coa-howto {
  margin: var(--space-7) 0;
}

.coa-howto details {
  background: var(--coa-warning-bg);
  border: 1px solid rgba(112, 82, 34, 0.15);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.coa-howto summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-4);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text);
  transition: background var(--duration) var(--ease);
}

.coa-howto summary:hover {
  background: rgba(112, 82, 34, 0.08);
}

/* Hide ALL browser default details markers - comprehensive fix */
.coa-howto summary,
.coa-howto details > summary,
.coa .coa-howto summary {
  list-style: none !important;
  list-style-type: none !important;
}

.coa-howto summary::marker,
.coa-howto summary::-webkit-details-marker,
.coa-howto summary::-moz-list-bullet,
details.coa-howto summary::marker,
.coa .coa-howto summary::marker {
  display: none !important;
  content: "" !important;
  font-size: 0 !important;
  width: 0 !important;
  height: 0 !important;
}

/* Question mark icon */
.coa-howto summary > svg:first-child {
  flex-shrink: 0;
  color: var(--coa-warning);
}

/* Chevron icon - pushed to right */
.coa-howto-chevron {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--coa-warning);
  transition: transform var(--duration) var(--ease);
}

.coa-howto details[open] .coa-howto-chevron {
  transform: rotate(180deg);
}

.coa-howto .content {
  padding: 0 var(--space-5) var(--space-4);
}

.coa-howto ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.coa-howto li {
  padding: var(--space-3) 0;
  padding-left: var(--space-5);
  position: relative;
  font-size: var(--font-sm);
  color: var(--coa-text-secondary);
  border-bottom: 1px solid rgba(112, 82, 34, 0.1);
}

.coa-howto li:last-child {
  border-bottom: none;
}

.coa-howto li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--coa-warning);
  font-weight: 500;
}

.coa-howto li strong {
  color: var(--coa-text);
}

/* Definition list styling for howto */
.coa-howto-list {
  margin: var(--space-4) 0 0;
  padding: 0;
}

.coa-howto-item {
  padding: var(--space-4) 0;
  padding-left: var(--space-6);
  position: relative;
  border-bottom: 1px solid rgba(112, 82, 34, 0.15);
}

.coa-howto-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.coa-howto-item:first-child {
  padding-top: 0;
}

.coa-howto-item::before {
  content: "→";
  position: absolute;
  left: 0;
  top: var(--space-4);
  color: var(--coa-warning);
  font-weight: 600;
  font-size: var(--font-base);
}

.coa-howto-item:first-child::before {
  top: 0;
}

.coa-howto-item dt {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--coa-text);
  margin-bottom: var(--space-2);
}

.coa-howto-item dd {
  font-size: var(--font-base);
  color: var(--coa-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* ==========================================================================
   Controls - Unit Toggle & Filter Chips
   ========================================================================== */

.coa-section {
  margin: var(--space-7) 0;
}

.coa-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  align-items: flex-start;
  margin-bottom: var(--space-5);
  /* Sticky positioning on scroll - accounts for typical WP header */
  position: sticky;
  top: var(--wp-admin--admin-bar--height, 0px);
  z-index: 50;
  background: var(--coa-white);
  padding: var(--space-3) var(--space-4);
  margin: 0 calc(-1 * var(--space-4)) var(--space-5);
  border-bottom: 1px solid var(--coa-border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.coa-control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.coa-control-label {
  font-size: var(--font-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--coa-text-muted);
}

.coa-unit-toggle {
  display: inline-flex;
  background: var(--coa-surface);
  border-radius: var(--radius-md);
  padding: 3px;
  border: 1px solid var(--coa-border);
}

.coa-unit-toggle button {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--duration) var(--ease);
}

.coa-unit-toggle button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.coa-unit-toggle button:hover:not(.active):not(:disabled) {
  color: var(--coa-text-secondary);
}

.coa-unit-toggle button.active,
.coa-unit-toggle button[aria-pressed="true"] {
  background: var(--coa-white) !important;
  color: var(--coa-text);
  box-shadow: var(--shadow-sm);
}

.coa-toggle-note {
  margin: var(--space-3) 0 var(--space-5);
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
}

.coa-chip-row {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  background: var(--coa-surface);
  border-radius: var(--radius-md);
  padding: 4px;
  border: 1px solid var(--coa-border-strong);
}

/* Filter chips - strong overrides against theme */
.coa .coa-chip,
.coa .coa-chip-row .coa-chip,
.coa button.coa-chip,
main.coa .coa-chip {
  display: inline-flex !important;
  align-items: center !important;
  padding: 8px 16px !important;
  font-size: var(--font-sm) !important;
  font-weight: 500 !important;
  color: #4a4a4a !important;
  background: #ffffff !important;
  background-color: #ffffff !important;
  border: 2px solid #d1d5db !important;
  border-radius: var(--radius-sm) !important;
  transition: all var(--duration) var(--ease) !important;
  cursor: pointer !important;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05) !important;
  opacity: 1 !important;
  visibility: visible !important;
}

.coa .coa-chip:hover:not(.active) {
  color: var(--coa-text) !important;
  background: var(--coa-surface) !important;
  border-color: var(--coa-border-strong);
}

.coa .coa-chip.active,
.coa .coa-chip[aria-pressed="true"] {
  background: var(--coa-primary) !important;
  color: var(--coa-white) !important;
  border-color: var(--coa-primary-dark) !important;
  box-shadow: 0 2px 4px rgba(137, 175, 139, 0.3);
  font-weight: 600;
}

/* ==========================================================================
   Table - Clean Data Presentation
   ========================================================================== */

.coa-table-wrap {
  border-radius: var(--radius-md);
  border: 1px solid var(--coa-border-strong);
  background: var(--coa-white);
  overflow: hidden;
}

.coa table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-base);
}

.coa thead th {
  background: var(--coa-surface);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--coa-text-muted);
  border-bottom: 2px solid var(--coa-border-strong);
}

.coa tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--coa-border);
  color: var(--coa-text-secondary);
  vertical-align: middle;
  font-size: var(--font-base);
}

.coa tbody tr:last-child td {
  border-bottom: none;
}

.coa tbody tr {
  transition: background var(--duration) var(--ease);
}

/* Zebra striping - subtle alternating rows */
.coa tbody tr:nth-child(even) {
  background: var(--coa-surface);
}

.coa tbody tr:hover {
  background: var(--coa-primary-lighter);
  border-left: 3px solid var(--coa-primary);
}

/* Green accent border on hover - using border instead of pseudo-element */
.coa tbody tr {
  border-left: 3px solid transparent;
  transition:
    background var(--duration) var(--ease),
    border-left-color var(--duration) var(--ease);
}

/* Table column widths for consistent alignment */
.coa table th:first-child,
.coa table td:first-child {
  width: 80px;
}

.coa table th:nth-child(2),
.coa table td:nth-child(2) {
  width: auto;
}

.coa table th:nth-child(3),
.coa table td:nth-child(3) {
  width: 120px;
  text-align: right;
}

.coa table th:nth-child(4),
.coa table td:nth-child(4) {
  width: 100px;
  text-align: right;
}

.coa th.value,
.coa td.value {
  text-align: right;
}

.coa td.value {
  font-variant-numeric: tabular-nums;
}

/* Unit column */
.coa-unit {
  color: var(--coa-text-muted);
  font-size: var(--font-sm);
}

/* Code column - same font as rest of table, neutral color (NOT red!) */
.coa table td:first-child code,
.coa table tbody td:first-child code,
.coa .coa-table-wrap table td code,
main.coa table td code,
.coa table td code {
  font-size: 14px !important;
  color: #4a4a4a !important;
  background: transparent !important;
  background-color: transparent !important;
  padding: 0 !important;
  border-radius: 0 !important;
  font-family: var(--font-family) !important;
  border: none !important;
  text-decoration: none !important;
}

.coa-badge-ok {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--coa-success-bg);
  color: var(--coa-success);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-sm);
  font-variant-numeric: tabular-nums;
}

.coa-badge-nd {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--coa-surface);
  color: var(--coa-text-muted);
  border-radius: var(--radius-full);
  font-size: var(--font-sm);
  border: 1px solid var(--coa-border);
}

.coa-table-note {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--coa-surface);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   Mobile Cards
   ========================================================================== */

.coa-cards {
  display: none;
}

.coa-card {
  background: var(--coa-white);
  border: 1px solid var(--coa-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: all var(--duration) var(--ease);
}

.coa-card:active {
  background: var(--coa-primary-lighter);
}

.coa-card h3 {
  font-size: var(--font-sm);
  margin: 0;
}

.coa-card small {
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
}

.coa-card-value {
  font-size: var(--font-md);
  font-weight: 600;
  margin: var(--space-2) 0;
}

.coa-card-unit {
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
}

/* ==========================================================================
   Chart
   ========================================================================== */

.coa-chart {
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--coa-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--coa-border);
}

.coa-chart h3 {
  margin: 0 0 var(--space-1);
  font-size: var(--font-md);
  font-weight: 600;
}

.coa-chart-subtitle {
  margin: 0 0 var(--space-4);
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
}

.coa-chart-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.coa-chart-bar:last-child {
  margin-bottom: 0;
}

.coa-chart-bar span {
  min-width: 110px;
  font-size: var(--font-sm);
  color: var(--coa-text-secondary);
}

.coa-chart-track {
  flex: 1;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--coa-surface);
  position: relative;
  overflow: hidden;
}

.coa-chart-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0;
  border-radius: var(--radius-full);
  background: linear-gradient(
    90deg,
    var(--coa-primary-light),
    var(--coa-primary)
  );
  /* No transition here - added via JS .animated class for scroll-triggered animation */
}

.coa-chart-bar strong {
  min-width: 55px;
  text-align: right;
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text);
  font-family: var(--font-mono);
}

/* ==========================================================================
   404 Page
   ========================================================================== */

.coa-404 {
  background: var(--coa-white);
  border: 1px solid var(--coa-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  max-width: 420px;
  margin: 0 auto;
}

.coa-404 h1 {
  margin: 0 0 var(--space-3);
  font-size: var(--font-lg);
}

.coa-404 p {
  margin: 0 0 var(--space-5);
  color: var(--coa-text-muted);
}

.coa-404 a {
  display: inline-flex;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  background: var(--coa-primary);
  color: var(--coa-white);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--duration) var(--ease);
}

.coa-404 a:hover {
  background: var(--coa-primary-dark);
  transform: translateY(-1px);
}

/* ==========================================================================
   Version Marker
   ========================================================================== */

.coa-version-marker {
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: 1px solid var(--coa-border);
  text-align: center;
  font-size: 10px;
  color: var(--coa-text-muted);
  opacity: 0.5;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   Responsive - Tablet
   ========================================================================== */

@media (max-width: 768px) {
  .coa {
    padding: var(--space-5) var(--space-4) var(--space-7);
  }

  .coa-hero {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-4);
    text-align: center;
  }

  .coa-hero-media {
    width: 100px;
    height: 100px;
    margin: 0 auto;
  }

  .coa-context-label {
    justify-content: center;
  }

  .coa-key-metrics {
    align-items: center;
  }

  .coa-hero-downloads {
    justify-content: center;
  }

  .coa-hero-downloads .coa-btn {
    width: 100%;
    max-width: 240px;
  }

  .coa-summary-card {
    padding: var(--space-4);
  }

  .coa-summary-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
  }

  .coa-controls {
    flex-direction: column;
    gap: var(--space-3);
  }

  .coa-unit-toggle,
  .coa-chip-row {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   Responsive - Mobile (smaller fonts allowed)
   ========================================================================== */

@media (max-width: 640px) {
  /* Mobile typography - smaller sizes allowed */
  .coa {
    --font-sm: 13px;
    --font-base: 14px;
    --font-md: 16px;
    --font-lg: 20px;
    --font-xl: 24px;
  }

  .coa {
    font-size: var(--font-base);
  }

  .coa h1 {
    font-size: var(--font-lg);
  }

  .coa h2 {
    font-size: var(--font-md);
  }

  .coa-table-wrap {
    display: none;
  }

  .coa-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .coa-summary-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .coa-unit-toggle button,
  .coa .coa-chip {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-sm);
  }

  .coa-chart-bar span {
    min-width: 70px;
  }

  .coa-chart-bar strong {
    min-width: 50px;
  }
}

/* ==========================================================================
   Responsive - Small Mobile
   ========================================================================== */

@media (max-width: 420px) {
  /* Even smaller typography for very small screens */
  .coa {
    --font-sm: 12px;
    --font-base: 13px;
    --font-md: 15px;
    --font-lg: 18px;
    --font-xl: 22px;
  }

  .coa {
    padding: var(--space-4) var(--space-3) var(--space-6);
  }

  .coa-controls {
    margin-inline: calc(-1 * var(--space-3));
  }

  .coa-hero {
    padding: var(--space-4);
  }

  .coa-summary-metrics {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .coa-cards {
    grid-template-columns: 1fr;
  }

  .coa-unit-toggle,
  .coa-chip-row {
    flex-wrap: wrap;
  }

  .coa-chart {
    padding: var(--space-4);
  }

  .coa-chart-bar {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .coa-chart-bar span {
    width: 100%;
    min-width: auto;
  }

  .coa-chart-track {
    width: 100%;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .coa {
    max-width: none;
    padding: 0;
  }

  .coa-hero,
  .coa-summary-card,
  .coa-chart {
    box-shadow: none;
    border: 1px solid #ddd;
  }

  .coa-progress {
    display: none;
  }

  .coa-howto details {
    display: block;
  }

  .coa-btn {
    display: none;
  }

  .coa-cards {
    display: grid !important;
  }

  .coa-table-wrap {
    display: block !important;
  }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   Focus & Accessibility
   ========================================================================== */

.coa :focus-visible {
  outline: 2px solid var(--coa-primary);
  outline-offset: 2px;
}

.coa button:focus:not(:focus-visible),
.coa a:focus:not(:focus-visible) {
  outline: none;
}

@media (forced-colors: active) {
  .coa-badge,
  .coa-badge-ok,
  .coa-badge-nd,
  .coa-btn {
    border: 2px solid currentColor;
  }

  .coa-chart-fill {
    background: CanvasText;
  }
}

/* ==========================================================================
   Tooltip System
   ========================================================================== */

[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--coa-text);
  opacity: 0;
  visibility: hidden;
  transition: all 150ms var(--ease);
  z-index: 101;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-3);
  background: var(--coa-text);
  color: var(--coa-white);
  font-size: var(--font-sm);
  font-weight: 400;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  max-width: 280px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: all 150ms var(--ease);
  z-index: 100;
  pointer-events: none;
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after,
[data-tooltip]:focus::before,
[data-tooltip]:focus::after {
  opacity: 1;
  visibility: visible;
}

/* Long tooltips wrap */
[data-tooltip-wrap]::after {
  white-space: normal;
  width: max-content;
}

/* Info icon button */
.coa-info {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  margin-left: var(--space-2);
  border-radius: 50%;
  background: var(--coa-white);
  border: 1px solid var(--coa-border);
  font-size: 10px;
  font-weight: 600;
  color: var(--coa-text-muted);
  cursor: help;
  transition: all var(--duration) var(--ease);
  vertical-align: middle;
  flex-shrink: 0;
}

.coa-info:hover {
  background: var(--coa-primary-lighter);
  border-color: var(--coa-primary-light);
  color: var(--coa-primary);
}

/* ==========================================================================
   Enhanced Download Button
   ========================================================================== */

.coa-btn.coa-btn-download {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-base);
  gap: var(--space-3);
  background: #ff934f;
  border-color: #ff934f;
}

.coa-btn.coa-btn-download:hover {
  background: #e87f3a;
  border-color: #e87f3a;
}

.coa-btn.coa-btn-download::before {
  content: "↓";
  font-size: 18px;
  font-weight: 600;
}

@keyframes coa-pulse {
  0%,
  100% {
    box-shadow:
      var(--shadow-sm),
      0 0 0 0 rgba(255, 147, 79, 0.4);
  }
  50% {
    box-shadow:
      var(--shadow-sm),
      0 0 0 8px rgba(255, 147, 79, 0);
  }
}

.coa-btn.coa-btn-download {
  animation: coa-pulse 2s ease-in-out 1;
  animation-delay: 0.5s;
}

/* ==========================================================================
   Enhanced Table Row Hover (simplified - no pseudo-element)
   ========================================================================== */

/* Hover is already defined in table section above */

/* ==========================================================================
   Chart Bar Animations & Hover
   ========================================================================== */

.coa-chart-fill.animated {
  transition: width 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.coa-chart-bar {
  cursor: default;
  transition: all var(--duration) var(--ease);
}

.coa-chart-bar:hover {
  transform: translateX(4px);
}

.coa-chart-bar:hover .coa-chart-fill {
  filter: brightness(1.1);
}

.coa-chart-bar:hover strong {
  color: var(--coa-primary);
}

/* ==========================================================================
   Copy to Clipboard Feedback
   ========================================================================== */

.coa-value {
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  position: relative;
}

.coa-value:hover {
  color: var(--coa-primary);
}

.coa-value.copied::after {
  content: "✓";
  position: absolute;
  right: -20px;
  color: var(--coa-success);
  font-weight: 600;
  animation: coa-copied 1s ease forwards;
}

@keyframes coa-copied {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
  100% {
    opacity: 0;
    transform: scale(1);
  }
}

/* ==========================================================================
   Micro-Animations on Hover
   ========================================================================== */

/* Summary metric cards - subtle lift on hover */
.coa-summary-metrics > div {
  transition: all var(--duration) var(--ease);
}

.coa-summary-metrics > div:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Badge pulse on hover */
.coa-badge {
  transition: all var(--duration) var(--ease);
}

.coa-badge:hover {
  transform: scale(1.02);
}

/* Hero media zoom is already defined - enhance it */
a.coa-hero-media:hover {
  box-shadow: var(--shadow-md);
}

/* Howto section expansion */
.coa-howto details[open] .content {
  animation: coa-slideDown 200ms var(--ease) forwards;
}

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

/* Filter chips - pop effect */
.coa .coa-chip {
  transition: all 150ms var(--ease);
}

.coa .coa-chip:active {
  transform: scale(0.96);
}

/* Unit toggle buttons - subtle feedback */
.coa-unit-toggle button {
  transition: all 150ms var(--ease);
}

.coa-unit-toggle button:active:not(.active) {
  transform: scale(0.96);
}

/* Table row hover handled with border-left in table section */

/* Mobile cards - touch feedback */
.coa-card {
  transition: all var(--duration) var(--ease);
}

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

/* ==========================================================================
   THC Report Information
   ========================================================================== */

.coa-thc-compliance {
  margin-top: var(--space-5);
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-5);
  background: var(--coa-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--coa-border);
  border-left: 4px solid var(--coa-border-strong);
  position: relative;
}

.coa-thc-compliance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.coa-thc-compliance-header strong {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--coa-text-secondary);
}

.coa-thc-compliance-header span {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--coa-text-secondary);
}

.coa-thc-compliance-header span.warning {
  color: var(--coa-text-secondary);
}

.coa-thc-progress-track {
  height: 10px;
  background: var(--coa-border);
  border-radius: var(--radius-full);
  position: relative;
  overflow: hidden;
}

.coa-thc-progress-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--coa-success), #7bc07e);
  transition: width 600ms var(--ease);
}

.coa-thc-progress-fill.warning {
  background: linear-gradient(90deg, var(--coa-warning), #ddb84a);
}

/* Legal limit marker (dynamic based on setting) */
.coa-thc-progress-limit {
  position: absolute;
  right: 0;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: var(--coa-text-muted);
}

.coa-thc-progress-limit::after {
  content: attr(data-limit);
  position: absolute;
  right: 0;
  top: -20px;
  font-size: 10px;
  color: var(--coa-text-muted);
  white-space: nowrap;
}

.coa-thc-compliance-note {
  margin-top: var(--space-2);
  font-size: var(--font-sm);
  color: var(--coa-text-muted);
}
/* Source-aware presentation controls and narrow mobile containment. */
.coa [data-coa-conversion],
.coa .coa-controls,
.coa .coa-chart,
.coa .coa-chart-bar,
.coa .coa-summary-metrics > div,
.coa .coa-card {
  min-width: 0;
}
.coa .coa-unit-toggle,
.coa .coa-chip-row {
  flex-wrap: wrap;
  max-width: 100%;
}
.coa .coa-value.coa-copy-value {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  font: inherit;
  font-weight: 600;
  text-align: inherit;
  white-space: normal;
  overflow-wrap: anywhere;
  cursor: copy;
}
.coa .coa-card-value,
.coa .coa-card-unit,
.coa .coa-unit,
.coa .coa-chart-bar strong,
.coa .coa-summary-metrics span,
.coa .coa-thc-compliance-note,
.coa .coa-toggle-note {
  overflow-wrap: anywhere;
  word-break: normal;
}
.coa .coa-table-wrap {
  max-width: 100%;
  overflow-x: auto;
}
.coa .coa-chart-track {
  min-width: 0;
}
.coa .coa-chart-fill[data-width="0%"] {
  width: 0 !important;
}
.coa .coa-value.copied::after {
  content: attr(data-coa-copied);
  position: static;
  margin-left: 0.4em;
  color: var(--coa-text-muted);
  font-size: 0.75em;
  font-weight: 500;
}
@media (max-width: 420px) {
  .coa .coa-chart-bar {
    grid-template-columns: minmax(0, 1fr);
  }
  .coa .coa-chart-bar strong {
    max-width: 100%;
  }
}