/* ============================================
   GPA Calculator - Stylesheet
   Matches All-WebTools design system (Slate + Orange)
   ============================================ */

:root {
    --gpa-primary: #FF8C00;
    --gpa-primary-hover: #E67E00;
    --gpa-accent: #6366f1;
    --gpa-dark: #0f172a;
    --gpa-dark-light: #1e293b;
    --gpa-white: #ffffff;
    --gpa-gray-50: #f8fafc;
    --gpa-gray-100: #f1f5f9;
    --gpa-gray-200: #e2e8f0;
    --gpa-gray-300: #cbd5e1;
    --gpa-gray-400: #94a3b8;
    --gpa-gray-500: #64748b;
    --gpa-gray-600: #475569;
    --gpa-gray-700: #334155;
    --gpa-gray-800: #1e293b;
    --gpa-gray-900: #0f172a;
    --gpa-success: #22c55e;
    --gpa-danger: #ef4444;
    --gpa-warning: #f59e0b;
    --gpa-radius: 16px;
    --gpa-radius-sm: 8px;
    --gpa-radius-xs: 6px;
    --gpa-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --gpa-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --gpa-mono: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
}

.tool-main-card {
    background: var(--gpa-gray-100);
    border-radius: var(--gpa-radius);
    overflow: hidden;
}

.gpa-tool-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    padding: 24px;
}

@media (max-width: 1024px) {
    .gpa-tool-grid { grid-template-columns: 1fr; gap: 20px; }
}

.gpa-main-panel {
    background: var(--gpa-white);
    border-radius: var(--gpa-radius);
    padding: 24px;
    box-shadow: var(--gpa-shadow);
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* ============================================
   Options bar (scale + level selectors)
   ============================================ */
.gpa-options-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 640px) {
    .gpa-options-bar { grid-template-columns: 1fr; }
}

.gpa-option-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gpa-input-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--gpa-gray-700);
}

.gpa-input-label iconify-icon {
    color: var(--gpa-primary);
    font-size: 16px;
}

.gpa-select {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    background: var(--gpa-gray-50);
    border: 2px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-sm);
    font-size: 14px;
    color: var(--gpa-gray-800);
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23475569' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.gpa-select:focus {
    outline: none;
    border-color: var(--gpa-primary);
    background-color: var(--gpa-white);
}

/* ============================================
   Mini buttons
   ============================================ */
.gpa-mini-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--gpa-white);
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-xs);
    font-size: 13px;
    color: var(--gpa-gray-700);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-weight: 500;
    font-family: inherit;
}

.gpa-mini-btn:hover {
    background: var(--gpa-gray-50);
    border-color: var(--gpa-gray-300);
    color: var(--gpa-gray-900);
}

.gpa-mini-btn.primary {
    background: var(--gpa-primary);
    color: var(--gpa-white);
    border-color: var(--gpa-primary);
}

.gpa-mini-btn.primary:hover {
    background: var(--gpa-primary-hover);
    border-color: var(--gpa-primary-hover);
    color: var(--gpa-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(255, 140, 0, 0.25);
}

.gpa-mini-btn.danger {
    color: var(--gpa-danger);
    border-color: #fecaca;
}

.gpa-mini-btn.danger:hover {
    background: var(--gpa-danger);
    color: var(--gpa-white);
    border-color: var(--gpa-danger);
}

.gpa-mini-btn iconify-icon { font-size: 15px; }

/* ============================================
   Trust badges
   ============================================ */
.gpa-trust-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    padding: 14px;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
    border: 1px solid #bbf7d0;
    border-radius: var(--gpa-radius-sm);
}

.gpa-trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    background: rgba(255,255,255,0.7);
    border-radius: var(--gpa-radius-xs);
}

.gpa-trust-badge iconify-icon {
    font-size: 22px;
    color: var(--gpa-success);
    flex-shrink: 0;
}

.gpa-trust-badge div {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
}

.gpa-trust-badge strong {
    font-size: 13px;
    color: #166534;
    font-weight: 700;
    line-height: 1.2;
}

.gpa-trust-badge span {
    font-size: 11px;
    color: #15803d;
    line-height: 1.3;
}

/* ============================================
   Cumulative GPA card
   ============================================ */
.gpa-cumulative-card {
    background: var(--gpa-gray-50);
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-sm);
    padding: 14px 16px;
}

.gpa-cumulative-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.gpa-cumulative-title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gpa-gray-800);
}

.gpa-cumulative-title iconify-icon {
    color: var(--gpa-primary);
    font-size: 18px;
}

.gpa-cumulative-meta {
    font-weight: 400;
    color: var(--gpa-gray-500);
    font-size: 12px;
}

.gpa-cumulative-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 14px;
}

@media (max-width: 480px) {
    .gpa-cumulative-fields { grid-template-columns: 1fr; }
}

.gpa-cumulative-input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.gpa-cumulative-input-group label {
    font-size: 11px;
    font-weight: 600;
    color: var(--gpa-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.gpa-cumulative-input-group input {
    padding: 10px 12px;
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-xs);
    background: var(--gpa-white);
    font-size: 15px;
    font-weight: 600;
    color: var(--gpa-gray-900);
    font-family: var(--gpa-mono);
    outline: none;
    transition: border-color 0.15s;
}

.gpa-cumulative-input-group input:focus {
    border-color: var(--gpa-primary);
}

/* Toggle switch */
.gpa-toggle {
    position: relative;
    display: inline-block;
    width: 42px;
    height: 24px;
    flex-shrink: 0;
    cursor: pointer;
}

.gpa-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.gpa-toggle-track {
    position: absolute;
    inset: 0;
    background: var(--gpa-gray-300);
    border-radius: 999px;
    transition: background 0.2s;
}

.gpa-toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--gpa-white);
    border-radius: 50%;
    transition: transform 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.gpa-toggle input:checked + .gpa-toggle-track {
    background: var(--gpa-primary);
}

.gpa-toggle input:checked + .gpa-toggle-track .gpa-toggle-thumb {
    transform: translateX(18px);
}

/* ============================================
   Courses table
   ============================================ */
.gpa-courses-card {
    background: var(--gpa-white);
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-sm);
    overflow: hidden;
}

.gpa-courses-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--gpa-gray-200);
    background: var(--gpa-gray-50);
}

.gpa-courses-header h3 {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gpa-gray-800);
}

.gpa-courses-header h3 iconify-icon {
    color: var(--gpa-primary);
    font-size: 18px;
}

.gpa-courses-actions {
    display: flex;
    gap: 6px;
}

.gpa-courses-table-wrap {
    overflow-x: auto;
}

.gpa-courses-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 540px;
}

.gpa-courses-table thead th {
    padding: 10px 12px;
    background: var(--gpa-gray-50);
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--gpa-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--gpa-gray-200);
}

.gpa-th-credits { width: 100px; }
.gpa-th-grade   { width: 130px; }
.gpa-th-type    { width: 160px; }
.gpa-th-remove  { width: 40px; }

.gpa-courses-table tbody tr {
    transition: background 0.15s;
}

.gpa-courses-table tbody tr:hover {
    background: var(--gpa-gray-50);
}

.gpa-courses-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--gpa-gray-100);
}

.gpa-courses-table tbody tr:last-child td { border-bottom: none; }

.gpa-row-input {
    width: 100%;
    box-sizing: border-box;
    padding: 8px 10px;
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-xs);
    background: var(--gpa-white);
    font-size: 14px;
    color: var(--gpa-gray-900);
    outline: none;
    transition: border-color 0.15s;
    font-family: inherit;
}

.gpa-row-input:focus {
    border-color: var(--gpa-primary);
}

.gpa-row-input.numeric {
    text-align: center;
    font-weight: 600;
    font-family: var(--gpa-mono);
}

.gpa-row-grade,
.gpa-row-type {
    padding: 8px 26px 8px 10px;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23475569' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-color: var(--gpa-white);
    cursor: pointer;
}

.gpa-row-remove {
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--gpa-gray-400);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s;
}

.gpa-row-remove:hover {
    color: var(--gpa-danger);
    background: #fef2f2;
}

/* ============================================
   Result Card
   ============================================ */
.gpa-result-card {
    background: linear-gradient(135deg, var(--gpa-gray-900) 0%, var(--gpa-gray-800) 100%);
    border-radius: var(--gpa-radius);
    padding: 24px;
    color: var(--gpa-white);
    box-shadow: var(--gpa-shadow-lg);
    position: relative;
    overflow: hidden;
}

.gpa-result-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 140, 0, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.gpa-result-main {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    align-items: center;
    position: relative;
}

@media (max-width: 540px) {
    .gpa-result-main {
        grid-template-columns: 1fr;
        gap: 16px;
        justify-items: center;
        text-align: center;
    }
}

/* Big GPA circle */
.gpa-result-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: conic-gradient(var(--gpa-primary) var(--gpa-percent, 0%), rgba(255,255,255,0.08) 0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: background 0.3s;
}

.gpa-result-circle-inner {
    width: 116px;
    height: 116px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gpa-gray-800), var(--gpa-gray-900));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.gpa-result-value {
    font-size: 36px;
    font-weight: 800;
    color: var(--gpa-primary);
    font-family: var(--gpa-mono);
    line-height: 1;
}

.gpa-result-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 2px;
}

.gpa-result-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

@media (max-width: 540px) {
    .gpa-result-stats {
        grid-template-columns: 1fr 1fr;
        width: 100%;
    }
}

.gpa-stat {
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--gpa-radius-xs);
    padding: 10px 12px;
}

.gpa-stat-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.gpa-stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--gpa-white);
    font-family: var(--gpa-mono);
}

.gpa-stat-highlight {
    color: var(--gpa-primary);
}

.gpa-result-bar {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 999px;
    margin: 16px 0 8px;
    overflow: hidden;
    position: relative;
}

.gpa-result-bar-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #ef4444 0%, #f59e0b 50%, #22c55e 100%);
    border-radius: 999px;
    transition: width 0.4s ease-out;
}

.gpa-result-message {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    font-weight: 500;
    margin-bottom: 16px;
}

.gpa-result-actions {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 8px;
}

@media (max-width: 480px) {
    .gpa-result-actions { grid-template-columns: 1fr; }
    .gpa-result-actions .gpa-mini-btn { justify-content: center; }
}

/* ============================================
   Side Panel
   ============================================ */
.gpa-side-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

.gpa-section {
    background: var(--gpa-white);
    border-radius: var(--gpa-radius);
    padding: 18px;
    box-shadow: var(--gpa-shadow);
}

.gpa-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.gpa-section-header h3 {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--gpa-gray-800);
    margin: 0;
}

.gpa-section-header h3 iconify-icon {
    color: var(--gpa-primary);
    font-size: 18px;
}

/* Scale Reference */
.gpa-scale-reference {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
    max-height: 320px;
    overflow-y: auto;
}

.gpa-scale-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 10px;
    background: var(--gpa-gray-50);
    border-radius: var(--gpa-radius-xs);
    font-size: 12px;
}

.gpa-scale-grade {
    font-weight: 700;
    color: var(--gpa-gray-900);
    font-family: var(--gpa-mono);
}

.gpa-scale-point {
    color: var(--gpa-primary);
    font-weight: 600;
    font-family: var(--gpa-mono);
}

/* Saved list */
.gpa-saved-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 280px;
    overflow-y: auto;
}

.gpa-saved-empty {
    font-size: 13px;
    color: var(--gpa-gray-400);
    text-align: center;
    padding: 12px;
    margin: 0;
    font-style: italic;
}

.gpa-saved-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px;
    background: var(--gpa-gray-50);
    border-radius: var(--gpa-radius-xs);
    cursor: pointer;
    transition: all 0.15s;
    text-align: left;
    width: 100%;
    border: 1px solid transparent;
    font-family: inherit;
}

.gpa-saved-item:hover {
    background: #fff7ed;
    border-color: var(--gpa-primary);
}

.gpa-saved-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.gpa-saved-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--gpa-gray-900);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gpa-saved-detail {
    font-size: 11px;
    color: var(--gpa-gray-500);
    font-family: var(--gpa-mono);
}

.gpa-saved-remove {
    background: transparent;
    border: none;
    color: var(--gpa-gray-400);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.15s;
    flex-shrink: 0;
}

.gpa-saved-remove:hover {
    color: var(--gpa-danger);
    background: #fef2f2;
}

/* Tips */
.gpa-tips-section {
    background: linear-gradient(135deg, #1e293b, #0f172a);
}

.gpa-tips-section .gpa-section-header h3 {
    color: var(--gpa-white);
}

.gpa-tips-section .gpa-section-header h3 iconify-icon {
    color: var(--gpa-primary);
}

.gpa-tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.gpa-tips-list li {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    font-size: 13px;
    line-height: 1.5;
    color: rgba(255,255,255,0.85);
}

.gpa-tips-list iconify-icon {
    color: var(--gpa-primary);
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* ============================================
   Toast notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.gpa-toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--gpa-gray-900);
    color: var(--gpa-white);
    border-radius: var(--gpa-radius-sm);
    box-shadow: var(--gpa-shadow-lg);
    font-size: 14px;
    font-weight: 500;
    pointer-events: auto;
    animation: gpa-toast-in 0.3s ease-out;
    max-width: 360px;
}

.gpa-toast.success { background: var(--gpa-success); }
.gpa-toast.error   { background: var(--gpa-danger); }
.gpa-toast.fade-out { animation: gpa-toast-out 0.3s ease-in forwards; }

@keyframes gpa-toast-in {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes gpa-toast-out {
    to { transform: translateY(20px); opacity: 0; }
}

/* ============================================
   Legal/Safety, comparison, tables, etc. (shared)
   ============================================ */
.legal-safety-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    .legal-safety-grid { grid-template-columns: 1fr; gap: 16px; }
}

.legal-card {
    padding: 24px;
    border-radius: var(--gpa-radius);
    border: 2px solid;
    background: var(--gpa-white);
}

.legal-card.legal {
    border-color: #c7d2fe;
    background: linear-gradient(135deg, #f5f3ff 0%, #eef2ff 100%);
}

.legal-card.safe {
    border-color: #bbf7d0;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
}

.legal-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.legal-card-head iconify-icon {
    font-size: 28px;
    padding: 8px;
    border-radius: 50%;
    background: var(--gpa-white);
    box-shadow: var(--gpa-shadow);
}

.legal-card.legal .legal-card-head iconify-icon { color: #6366f1; }
.legal-card.safe .legal-card-head iconify-icon  { color: var(--gpa-success); }

.legal-card-head h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--gpa-gray-900);
}

.legal-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--gpa-gray-700);
    margin: 0 0 12px;
}

.legal-card p strong { color: var(--gpa-gray-900); }

.legal-card code {
    background: rgba(255,255,255,0.7);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-family: var(--gpa-mono);
}

.safety-checks {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.safety-checks li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--gpa-gray-700);
    line-height: 1.5;
}

.safety-checks iconify-icon {
    color: var(--gpa-success);
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.use-case-card {
    padding: 22px;
    background: var(--gpa-white);
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-sm);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.use-case-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--gpa-shadow-lg);
    border-color: var(--gpa-primary);
}

.use-case-card iconify-icon {
    font-size: 28px;
    color: var(--gpa-primary);
    padding: 10px;
    background: #fff7ed;
    border-radius: 12px;
    margin-bottom: 12px;
}

.use-case-card h3 {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--gpa-gray-900);
}

.use-case-card p {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--gpa-gray-600);
}

.table-wrapper {
    overflow-x: auto;
    margin: 20px 0;
    border-radius: var(--gpa-radius-sm);
    border: 1px solid var(--gpa-gray-200);
}

.seo-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    background: var(--gpa-white);
    min-width: 640px;
}

.seo-table thead {
    background: linear-gradient(135deg, var(--gpa-gray-900), var(--gpa-gray-800));
    color: var(--gpa-white);
}

.seo-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.seo-table tbody tr {
    border-bottom: 1px solid var(--gpa-gray-200);
    transition: background 0.15s;
}

.seo-table tbody tr:hover { background: var(--gpa-gray-50); }
.seo-table tbody tr:last-child { border-bottom: none; }

.seo-table td {
    padding: 12px 16px;
    color: var(--gpa-gray-700);
    line-height: 1.5;
    vertical-align: top;
}

.seo-table td strong { color: var(--gpa-gray-900); font-weight: 700; }

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

@media (max-width: 768px) {
    .comparison-grid { grid-template-columns: 1fr; }
}

.comparison-card {
    padding: 22px;
    border-radius: var(--gpa-radius-sm);
    border: 2px solid;
}

.comparison-card.good {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
    border-color: #bbf7d0;
}

.comparison-card.bad {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-color: #fecaca;
}

.comparison-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.comparison-head iconify-icon { font-size: 24px; }
.comparison-card.good .comparison-head iconify-icon { color: var(--gpa-success); }
.comparison-card.bad .comparison-head iconify-icon  { color: var(--gpa-danger); }

.comparison-head h3 {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    color: var(--gpa-gray-900);
}

.comparison-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.comparison-card li {
    font-size: 13px;
    line-height: 1.5;
    color: var(--gpa-gray-700);
    padding-left: 22px;
    position: relative;
}

.comparison-card.good li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--gpa-success);
    font-weight: 700;
    font-size: 14px;
}

.comparison-card.bad li::before {
    content: "✕";
    position: absolute;
    left: 0;
    color: var(--gpa-danger);
    font-weight: 700;
    font-size: 14px;
}

.device-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 20px;
}

.device-card {
    padding: 20px 22px;
    background: var(--gpa-white);
    border: 1px solid var(--gpa-gray-200);
    border-radius: var(--gpa-radius-sm);
}

.device-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 12px;
    font-size: 16px;
    font-weight: 700;
    color: var(--gpa-gray-900);
}

.device-card h3 iconify-icon {
    color: var(--gpa-primary);
    font-size: 22px;
}

.device-card ol {
    margin: 0;
    padding-left: 22px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.device-card li {
    font-size: 14px;
    line-height: 1.6;
    color: var(--gpa-gray-700);
}

.device-card strong { color: var(--gpa-gray-900); }

.device-card kbd {
    background: var(--gpa-gray-100);
    border: 1px solid var(--gpa-gray-300);
    border-bottom-width: 2px;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 11px;
    font-family: var(--gpa-mono);
    color: var(--gpa-gray-700);
}

.best-practices-list {
    margin: 16px 0 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.best-practices-list li {
    padding: 14px 16px 14px 44px;
    background: var(--gpa-gray-50);
    border-radius: var(--gpa-radius-xs);
    border-left: 3px solid var(--gpa-primary);
    font-size: 14px;
    line-height: 1.6;
    color: var(--gpa-gray-700);
    position: relative;
}

.best-practices-list li::before {
    content: "★";
    position: absolute;
    left: 16px;
    top: 14px;
    color: var(--gpa-primary);
    font-size: 16px;
    font-weight: 700;
}

.best-practices-list strong { color: var(--gpa-gray-900); }

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 768px) {
    .gpa-tool-grid { padding: 16px; gap: 16px; }
    .gpa-main-panel { padding: 18px; gap: 14px; }
    .gpa-result-card { padding: 20px; }
    .gpa-result-circle { width: 110px; height: 110px; }
    .gpa-result-circle-inner { width: 92px; height: 92px; }
    .gpa-result-value { font-size: 28px; }
}

@media (max-width: 480px) {
    .gpa-trust-row { grid-template-columns: 1fr 1fr; padding: 10px; }
    .gpa-trust-badge { padding: 6px 8px; }
    .gpa-trust-badge iconify-icon { font-size: 18px; }
    .gpa-trust-badge strong { font-size: 12px; }
    .gpa-trust-badge span { font-size: 10px; }
    .legal-card { padding: 18px; }
    .comparison-card, .device-card, .use-case-card { padding: 16px; }
    .gpa-result-stats { grid-template-columns: 1fr 1fr; gap: 6px; }
    .gpa-stat { padding: 8px 10px; }
    .gpa-stat-value { font-size: 16px; }
}