:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-red: #f85149;
    --accent-orange: #d29922;
    --border-color: #30363d;
    --hover-bg: #30363d;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    padding: 40px 20px;
    position: relative;
}

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

.back-link {
    position: absolute;
    left: 0;
    top: 40px;
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.back-link:hover {
    transform: translateX(-5px);
}

/* Main Content */
main {
    flex: 1;
    padding: 20px 0;
}

/* Button Grid */
.button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 40px 0;
    max-width: 900px;
    margin: 0 auto;
}

.nav-button {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 50px 30px;
    text-decoration: none;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.nav-button:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 10px 30px rgba(88, 166, 255, 0.2);
}

.button-icon {
    font-size: 4rem;
}

.button-text {
    font-size: 1.5rem;
    font-weight: 600;
}

.aprilia-btn:hover {
    border-color: var(--accent-red);
    box-shadow: 0 10px 30px rgba(248, 81, 73, 0.2);
}

.website-btn:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 10px 30px rgba(88, 166, 255, 0.2);
}

.home-btn:hover {
    border-color: var(--accent-green);
    box-shadow: 0 10px 30px rgba(63, 185, 80, 0.2);
}

/* Statistics Section */
.stats-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
}

.stats-section h2 {
    margin-bottom: 20px;
    color: var(--accent-blue);
}

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

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-green);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Form Section */
.form-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
}

.form-section h2 {
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #4a8fd9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(88, 166, 255, 0.3);
}

.btn-danger {
    background: var(--accent-red);
    color: #fff;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-danger:hover {
    background: #d63939;
}

/* Table Section */
.table-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
}

.table-section h2 {
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--bg-tertiary);
}

th {
    padding: 12px;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background: var(--hover-bg);
}

.no-data {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

.consumption-good {
    color: var(--accent-green);
    font-weight: 600;
}

.consumption-bad {
    color: var(--accent-red);
    font-weight: 600;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .button-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    table {
        font-size: 0.9rem;
    }
    
    th, td {
        padding: 8px;
    }
}

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