:root {
    --primary: #00B894;
    --secondary: #55EFC4;
    --accent: #FDCB6E;
    --bg-color: #0A1F1C;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-main: #FFFFFF;
    --text-muted: #B2BEC3;
    --success: #00B894;
    --fail: #D63031;
    --radius: 12px;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem 1rem;
}

.app-container {
    max-width: 1000px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.accent-text {
    color: var(--primary);
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

main {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.checker-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

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

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.glass {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 4px;
    transition: var(--transition);
}

.color-picker-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 184, 148, 0.2);
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 32px;
    height: 32px;
    cursor: pointer;
    background: none;
    margin-right: 8px;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

input[type="text"] {
    background: none;
    border: none;
    color: var(--text-main);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    width: 100%;
    outline: none;
    text-transform: uppercase;
}

.preview-area {
    border-radius: 8px;
    padding: 2rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.preview-content {
    text-align: center;
}

.preview-content h2 {
    margin-bottom: 0.5rem;
}

.results-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contrast-score-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
}

.contrast-score-card .label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.ratio-value {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.status-badge {
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.pass {
    background: rgba(0, 184, 148, 0.2);
    color: var(--success);
}

.status-badge.fail {
    background: rgba(214, 48, 49, 0.2);
    color: var(--fail);
}

.compliance-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.compliance-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
}

.status-icon {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.pass .status-icon {
    background-color: var(--success);
    box-shadow: 0 0 10px var(--success);
}

.fail .status-icon {
    background-color: var(--fail);
}

.compliance-info h3 {
    font-size: 1rem;
    margin-bottom: 0.1rem;
}

.compliance-info p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.suggestions-section {
    margin-top: 1rem;
}

.suggestions-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.suggestions-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.suggestion-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition);
}

.suggestion-item:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.suggestion-colors {
    display: flex;
    gap: 0.5rem;
}

.color-swatch {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.suggestion-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.suggestion-ratio {
    font-weight: 700;
    color: var(--secondary);
}

.apply-btn {
    background: var(--primary);
    color: var(--bg-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.apply-btn:hover {
    background: var(--secondary);
    box-shadow: 0 4px 12px rgba(0, 184, 148, 0.3);
}

.empty-state {
    color: var(--text-muted);
    font-style: italic;
    grid-column: 1 / -1;
}

footer {
    text-align: center;
    margin-top: 4rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--card-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}