/* Produkčné CSS pre OKTE ceny elektriny */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Chart container */
canvas {
    max-width: 100%;
    height: auto;
}

/* Date input styling */
input[type="date"] {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    border: 1px solid #e5e7eb;
    background-color: #f9fafb;
    cursor: pointer;
    min-width: 140px;
    text-align: center;
    transition: background-color 0.2s ease;
}

input[type="date"]:hover {
    background-color: #f3f4f6;
}

input[type="date"]:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Navigation buttons */
.date-nav-btn {
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: all 0.2s ease;
    background-color: #f3f4f6;
    color: #374151;
    border: 1px solid #e5e7eb;
    min-width: 50px;
    text-align: center;
    cursor: pointer;
    user-select: none;
}

.date-nav-btn:hover {
    background-color: #e5e7eb;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.date-nav-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.date-nav-btn.today {
    background-color: #3b82f6;
    color: white;
    border-color: #2563eb;
}

.date-nav-btn.today:hover {
    background-color: #2563eb;
}

.date-nav-btn.yesterday {
    background-color: #9ca3af;
    color: white;
    border-color: #6b7280;
}

.date-nav-btn.yesterday:hover {
    background-color: #6b7280;
}

.date-nav-btn.tomorrow {
    background-color: #10b981;
    color: white;
    border-color: #059669;
}

.date-nav-btn.tomorrow:hover {
    background-color: #059669;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Error and info messages */
.alert {
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.alert-error {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.alert-info {
    background-color: #fefce8;
    border: 1px solid #fde68a;
    color: #92400e;
}

/* FVE vypnúť box */
.fve-off-box {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid #fecaca;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: inline-block;
}

/* Table optimizations */
.data-table {
    border-collapse: collapse;
    width: 100%;
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.data-table th {
    background-color: #f9fafb;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    color: #374151;
}

.data-table tr:hover {
    background-color: #f9fafb;
}

.price-low {
    color: #dc2626;
    font-weight: 700;
}

.price-normal {
    color: #374151;
}

/* Responsive design */
@media (max-width: 640px) {
    .date-nav-btn {
        padding: 0.4rem 0.6rem;
        min-width: 45px;
        font-size: 0.9rem;
    }
    
    input[type="date"] {
        padding: 0.4rem 0.6rem;
        min-width: 120px;
        font-size: 0.9rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .date-nav-btn {
        padding: 0.3rem 0.5rem;
        min-width: 40px;
        font-size: 0.8rem;
    }
    
    input[type="date"] {
        min-width: 100px;
        font-size: 0.8rem;
    }
}

/* Print styles */
@media print {
    .date-nav-btn,
    form {
        display: none;
    }
    
    body {
        background: white;
    }
    
    .container {
        box-shadow: none;
        max-width: none;
        margin: 0;
        padding: 1rem;
    }
}