/* Centering Calculator Page Styles */
:root {
    --cc-bg: #0a0a12;
    --cc-surface: #14141f;
    --cc-surface-light: #1a1a2e;
    --cc-border: rgba(255, 255, 255, 0.08);
    --cc-accent: #00ff88;
    --cc-accent-dim: rgba(0, 255, 136, 0.15);
    --cc-text: #ffffff;
    --cc-text-dim: #9ca3af;
    --cc-gem: #22c55e;
    --cc-mint: #4ade80;
    --cc-nm-plus: #a3e635;
    --cc-nm: #facc15;
    --cc-ex: #f97316;
    --cc-poor: #ef4444;
}

.centering-page {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 16px;
    min-height: 100vh;
    background: var(--cc-bg);
}

/* Header */
.cc-header {
    text-align: center;
    padding: 32px 0 24px;
}

.cc-header .brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--cc-accent-dim);
    color: var(--cc-accent);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.cc-header h1 {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--cc-text);
    margin: 0 0 8px;
    line-height: 1.2;
}

.cc-header .subtitle {
    color: var(--cc-text-dim);
    font-size: 0.95rem;
    margin: 0;
    max-width: 560px;
    margin: 0 auto;
}

/* Mode Tabs */
.cc-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
}

.cc-tab {
    padding: 10px 24px;
    border-radius: 10px;
    border: 1px solid var(--cc-border);
    background: var(--cc-surface);
    color: var(--cc-text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cc-tab:hover {
    border-color: var(--cc-accent);
    color: var(--cc-text);
}

.cc-tab.active {
    background: var(--cc-accent-dim);
    border-color: var(--cc-accent);
    color: var(--cc-accent);
}

/* Manual Mode */
.cc-panel {
    background: var(--cc-surface);
    border: 1px solid var(--cc-border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}

.cc-panel-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--cc-text);
    margin: 0 0 16px;
}

.cc-input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

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

.cc-input-group label {
    font-size: 0.8rem;
    color: var(--cc-text-dim);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cc-input-group input {
    background: var(--cc-bg);
    border: 1px solid var(--cc-border);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--cc-text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.cc-input-group input:focus {
    border-color: var(--cc-accent);
}

.cc-input-group input::placeholder {
    color: rgba(255, 255, 255, 0.25);
}

.cc-divider-label {
    text-align: center;
    padding: 8px 0;
    color: var(--cc-text-dim);
    font-size: 0.85rem;
    font-weight: 500;
}

.btn-calculate {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    background: var(--cc-accent);
    color: #0a0a12;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

.btn-calculate:hover {
    opacity: 0.9;
}

.btn-calculate:active {
    transform: scale(0.98);
}

/* Results */
.cc-results {
    display: none;
    margin-top: 24px;
}

.cc-results.visible {
    display: block;
}

.cc-grade-badge {
    text-align: center;
    padding: 28px;
    border-radius: 16px;
    background: var(--cc-surface);
    border: 2px solid var(--cc-border);
    margin-bottom: 16px;
    transition: border-color 0.3s;
}

.cc-grade-badge .grade-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--cc-text-dim);
    margin-bottom: 8px;
}

.cc-grade-badge .grade-name {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.cc-grade-badge .grade-psa {
    font-size: 0.95rem;
    color: var(--cc-text-dim);
}

.cc-ratios {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.cc-ratio-card {
    flex: 1;
    background: var(--cc-surface);
    border: 1px solid var(--cc-border);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}

.cc-ratio-card .ratio-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--cc-text-dim);
    margin-bottom: 6px;
}

.cc-ratio-card .ratio-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cc-text);
}

.cc-ratio-card .ratio-direction {
    font-size: 0.8rem;
    color: var(--cc-text-dim);
    margin-top: 2px;
}

/* Visual Bar */
.cc-visual-bar {
    background: var(--cc-surface);
    border: 1px solid var(--cc-border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
}

.cc-bar-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--cc-text-dim);
    margin-bottom: 8px;
}

.cc-bar-track {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
    margin-bottom: 4px;
}

.cc-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.4s ease;
}

.cc-bar-markers {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--cc-text-dim);
}

/* Image Mode */
.cc-upload-area {
    position: relative;
    width: 100%;
    min-height: 300px;
    background: var(--cc-surface);
    border: 2px dashed var(--cc-border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s;
    overflow: hidden;
}

.cc-upload-area:hover {
    border-color: var(--cc-accent);
}

.cc-upload-placeholder {
    text-align: center;
    color: var(--cc-text-dim);
}

.cc-upload-placeholder i {
    font-size: 2.5rem;
    color: var(--cc-accent);
    margin-bottom: 12px;
    display: block;
}

.cc-upload-placeholder p {
    margin: 0 0 4px;
    font-size: 1rem;
    color: var(--cc-text);
}

.cc-upload-placeholder .hint {
    font-size: 0.85rem;
    color: var(--cc-text-dim);
}

/* Image Canvas */
.cc-image-workspace {
    display: none;
    position: relative;
    margin-bottom: 24px;
}

.cc-image-workspace.visible {
    display: block;
}

.cc-canvas-wrap {
    position: relative;
    display: inline-block;
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    background: var(--cc-surface);
    border: 1px solid var(--cc-border);
}

.cc-canvas-wrap img {
    width: 100%;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

.cc-canvas-wrap canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: crosshair;
    touch-action: none; /* Prevent scroll/zoom while dragging lines */
    -webkit-user-select: none;
    user-select: none;
}

.cc-image-instructions {
    background: var(--cc-accent-dim);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 10px;
    padding: 12px 16px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--cc-accent);
    line-height: 1.5;
}

.cc-image-controls {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.btn-reset-image {
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--cc-border);
    background: var(--cc-surface);
    color: var(--cc-text-dim);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-reset-image:hover {
    border-color: var(--cc-accent);
    color: var(--cc-text);
}

/* Grade Reference Table */
.cc-grade-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

.cc-grade-table th,
.cc-grade-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--cc-border);
    font-size: 0.85rem;
}

.cc-grade-table th {
    color: var(--cc-text-dim);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.cc-grade-table td {
    color: var(--cc-text);
}

.cc-grade-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

/* SEO Content Section */
.cc-content {
    padding: 40px 0;
}

.cc-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--cc-text);
    margin: 32px 0 12px;
}

.cc-content h2:first-child {
    margin-top: 0;
}

.cc-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--cc-text);
    margin: 24px 0 8px;
}

.cc-content p {
    color: var(--cc-text-dim);
    line-height: 1.7;
    margin: 0 0 14px;
    font-size: 0.95rem;
}

.cc-content ul,
.cc-content ol {
    color: var(--cc-text-dim);
    line-height: 1.7;
    padding-left: 20px;
    margin: 0 0 14px;
    font-size: 0.95rem;
}

.cc-content li {
    margin-bottom: 6px;
}

.cc-content a {
    color: var(--cc-accent);
    text-decoration: none;
}

.cc-content a:hover {
    text-decoration: underline;
}

.cc-content strong {
    color: var(--cc-text);
}

.cc-info-box {
    background: var(--cc-surface);
    border: 1px solid var(--cc-border);
    border-radius: 12px;
    padding: 20px;
    margin: 16px 0;
}

.cc-info-box h4 {
    color: var(--cc-accent);
    margin: 0 0 8px;
    font-size: 0.95rem;
}

/* CTA Section */
.cc-cta {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.08), rgba(0, 136, 255, 0.08));
    border: 1px solid rgba(0, 255, 136, 0.15);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    margin: 32px 0 40px;
}

.cc-cta h3 {
    font-size: 1.2rem;
    color: var(--cc-text);
    margin: 0 0 8px;
}

.cc-cta p {
    color: var(--cc-text-dim);
    margin: 0 0 16px;
    font-size: 0.9rem;
}

.cc-cta .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    border: none;
    background: var(--cc-accent);
    color: #0a0a12;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: opacity 0.2s;
}

.cc-cta .btn-cta:hover {
    opacity: 0.9;
    text-decoration: none;
    color: #0a0a12;
}

/* Responsive */
@media (max-width: 600px) {
    .cc-header h1 {
        font-size: 1.4rem;
    }

    .cc-tabs {
        flex-direction: column;
    }

    .cc-tab {
        justify-content: center;
    }

    .cc-input-grid {
        grid-template-columns: 1fr;
    }

    .cc-ratios {
        flex-direction: column;
    }

    .cc-panel {
        padding: 16px;
    }

    .cc-cta {
        padding: 24px 16px;
    }
}