:root {
    --primary: #ff5e3a;
    --primary-dark: #e5462f;
    --success: #00d4aa;
    --error: #ff4757;
    --text: #2d3436;
    --text-light: #636e72;
    --bg: #f8f9fa;
    --white: #ffffff;
    --border: #dfe6e9;
    --shadow: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow);
    padding: 40px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text);
}

h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text);
}

.problem-description {
    margin-bottom: 40px;
    padding: 30px;
    background: var(--bg);
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.error-screenshot {
    margin: 20px -30px;
    text-align: center;
}

.error-screenshot img {
    width: 100%;
    height: auto;
    border-radius: 0;
    box-shadow: 0 2px 8px var(--shadow);
    display: block;
}

.problem-description p {
    margin-bottom: 15px;
    color: var(--text);
}

.problem-description a {
    color: var(--primary);
    text-decoration: none;
}

.problem-description a:hover {
    text-decoration: underline;
}

.features {
    margin-top: 20px;
}

.features ul {
    list-style: none;
    padding-left: 0;
}

.features li {
    padding: 8px 0;
    color: var(--text);
}

.upload-section {
    margin-bottom: 40px;
}

.upload-area {
    border: 3px dashed var(--border);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg);
}

.upload-area:hover {
    border-color: var(--primary);
    background: var(--white);
}

.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(255, 94, 58, 0.05);
}

.upload-content svg {
    color: var(--primary);
    margin-bottom: 20px;
}

.upload-content h3 {
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.upload-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.processing {
    text-align: center;
    padding: 60px 40px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.results {
    margin-top: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    border: 2px solid transparent;
}

.stat-card.full-width {
    grid-column: 1 / -1;
    text-align: left;
}

.stat-card.stat-success {
    border-color: var(--success);
    background: rgba(0, 212, 170, 0.05);
}

.stat-card.stat-error {
    border-color: var(--error);
    background: rgba(255, 71, 87, 0.05);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 10px;
}

.stat-card.stat-success .stat-value {
    color: var(--success);
}

.stat-card.stat-error .stat-value {
    color: var(--error);
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.duplicate-list {
    list-style: none;
    margin-top: 15px;
}

.duplicate-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.duplicate-list li:last-child {
    border-bottom: none;
}

.download-button {
    display: block;
    width: 100%;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    background: var(--primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.download-button:hover {
    background: var(--primary-dark);
}

footer {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 10px;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 2rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}