/* CSS Variables */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a25;
    --bg-hover: #22222f;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #22c55e;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    --border-color: #2a2a3a;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --radius-sm: 8px;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Sections */
section {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* Scheme Grid */
.scheme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.scheme-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.scheme-card:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.scheme-card.selected {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.scheme-card .emoji {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.scheme-card .name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.scheme-card .category {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Info Card */
.info-card {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
}

.info-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
}

.info-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.info-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.info-stats .stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Monaco', 'Consolas', monospace;
}

/* Target Section */
.target-section {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.target-display {
    flex: 1;
    min-width: 300px;
}

.target-display label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.target-value {
    background: var(--bg-card);
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    padding: 1rem 1.5rem;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 1.1rem;
    word-break: break-all;
    color: var(--accent-primary);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #5558e3;
}

.btn-success {
    background: var(--accent-success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #1da34e;
}

.btn-danger {
    background: var(--accent-danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
}

/* Controls */
.controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.control-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.control-group input[type="range"] {
    width: 100%;
    height: 8px;
    background: var(--bg-card);
    border-radius: 4px;
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.control-group select {
    padding: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
}

.control-group span {
    font-family: 'Monaco', 'Consolas', monospace;
    color: var(--accent-primary);
    font-weight: 600;
}

/* Method Hint */
.method-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* File Input */
.control-group input[type="file"] {
    padding: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    width: 100%;
}

.control-group input[type="file"]::file-selector-button {
    padding: 0.4rem 0.8rem;
    background: var(--accent-primary);
    border: none;
    border-radius: 4px;
    color: white;
    font-size: 0.85rem;
    cursor: pointer;
    margin-right: 0.75rem;
}

/* Estimation */
.estimation {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent-warning);
}

.estimation h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--accent-warning);
}

.estimation p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Progress */
.progress-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.progress-bar {
    flex: 1;
    height: 12px;
    background: var(--bg-card);
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-family: 'Monaco', 'Consolas', monospace;
    color: var(--text-secondary);
    min-width: 50px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-card .stat-icon {
    font-size: 1.5rem;
}

.stat-card .stat-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Monaco', 'Consolas', monospace;
    color: var(--accent-primary);
}

/* Current Attempts */
.current-attempts {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.current-attempts h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.attempts-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.85rem;
}

.attempt-item {
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.attempt-item .worker-id {
    font-size: 0.7rem;
    background: var(--accent-primary);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

/* Result */
.result {
    padding: 2rem;
    border-radius: var(--radius-sm);
    text-align: center;
}

.result.success {
    background: rgba(34, 197, 94, 0.1);
    border: 2px solid var(--accent-success);
}

.result.failure {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--accent-danger);
}

.result-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.result-content p {
    color: var(--text-secondary);
}

.result-content .match-value {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 1.25rem;
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    word-break: break-all;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.disclaimer {
    margin-top: 0.5rem;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.75rem;
    }

    section {
        padding: 1.5rem;
    }

    .scheme-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .target-section {
        flex-direction: column;
    }

    .target-display {
        width: 100%;
        min-width: auto;
    }

    .info-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

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

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

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

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

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.running .stat-number {
    animation: pulse 1s ease-in-out infinite;
}