/* Modern Dark Theme - Mobile First Design */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #808080;
    --accent-green: #00ff88;
    --accent-green-dark: #00cc6a;
    --accent-green-glow: rgba(0, 255, 136, 0.3);
    --border-color: #404040;
    --border-light: #555555;
    --shadow-dark: rgba(0, 0, 0, 0.3);
    --shadow-green: rgba(0, 255, 136, 0.2);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    font-size: 16px;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-primary) 0%, #2a2a2a 100%);
    min-height: 100vh;
    font-weight: 400;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem;
    min-height: 100vh;
}

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

header h1 {
    color: var(--text-primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
    margin: 0;
}

/* Input Section */
.input-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px var(--shadow-dark);
}

/* Dataset Buttons Grid */
.dataset-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.button-group {
    position: relative;
}

.dataset-btn {
    width: 100%;
    aspect-ratio: 1;
    min-height: 140px;
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 16px var(--shadow-dark);
}

.dataset-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.dataset-btn:hover {
    transform: translateY(-4px);
    border-color: var(--accent-green);
    box-shadow: 0 8px 32px var(--shadow-green);
}

.dataset-btn:hover::before {
    opacity: 0.1;
}

.dataset-btn:active {
    transform: translateY(-2px);
}

.dataset-btn.parsed {
    background: var(--bg-tertiary);
    border-color: var(--accent-green);
    box-shadow: 0 0 20px var(--accent-green-glow), 0 4px 16px var(--shadow-dark);
    animation: glowPulse 2s ease-in-out infinite;
}

.dataset-btn.parsed::before {
    opacity: 0.15;
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 20px var(--accent-green-glow), 0 4px 16px var(--shadow-dark);
    }
    50% {
        box-shadow: 0 0 30px var(--accent-green-glow), 0 4px 16px var(--shadow-dark);
    }
}

.btn-text {
    position: relative;
    z-index: 2;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.3;
}

.tick-indicator {
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: var(--accent-green);
    font-weight: bold;
    font-size: 1.5rem;
    z-index: 2;
    text-shadow: 0 0 10px var(--accent-green-glow);
}

/* Output Section */
.output-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px var(--shadow-dark);
}

/* Validation Container */
.validation-container {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.validation-container h3 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 600;
}

.validation-criteria {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--accent-green);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.criteria-text {
    margin: 0;
    font-size: 0.9rem;
    color: var(--accent-green);
    font-weight: 500;
    text-align: center;
}

.validation-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
}

.validation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.validation-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.validation-count {
    color: var(--text-primary);
    font-weight: 600;
    background: var(--bg-tertiary);
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.validation-dates {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.date-badge {
    background: var(--accent-green);
    color: var(--bg-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 2px 8px var(--shadow-green);
}

.no-dates {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.9rem;
}

/* Tables Container */
.tables-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.table-container {
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.table-container h3 {
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-green);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
    table-layout: fixed;
}

th, td {
    padding: 0.75rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
    border-bottom: 2px solid var(--accent-green);
}

td {
    color: var(--text-secondary);
}

tr:hover {
    background: rgba(0, 255, 136, 0.05);
}

tr:hover td {
    color: var(--text-primary);
}

/* Column width optimizations */
#totalAvailabilityTable th:nth-child(1),
#totalAvailabilityTable td:nth-child(1) {
    width: 35%;
}

#totalAvailabilityTable th:nth-child(2),
#totalAvailabilityTable td:nth-child(2) {
    width: 65%;
}

#categoryPerformanceTable th:nth-child(1),
#categoryPerformanceTable td:nth-child(1) {
    width: 20%;
}

#categoryPerformanceTable th:nth-child(2),
#categoryPerformanceTable td:nth-child(2) {
    width: 60%;
}

#categoryPerformanceTable th:nth-child(3),
#categoryPerformanceTable td:nth-child(3) {
    width: 20%;
}

#failedPicksTable th:nth-child(1),
#failedPicksTable td:nth-child(1) {
    width: 35%;
}

#failedPicksTable th:nth-child(2),
#failedPicksTable td:nth-child(2) {
    width: 65%;
}

#secondReplenTable th:nth-child(1),
#secondReplenTable td:nth-child(1) {
    width: 12%;
}

#secondReplenTable th:nth-child(2),
#secondReplenTable td:nth-child(2) {
    width: 15%;
}

#secondReplenTable th:nth-child(3),
#secondReplenTable td:nth-child(3) {
    width: 45%;
}

#secondReplenTable th:nth-child(4),
#secondReplenTable td:nth-child(4) {
    width: 15%;
}

#secondReplenTable th:nth-child(5),
#secondReplenTable td:nth-child(5) {
    width: 13%;
}

/* Error Message */
.error-message {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid #dc2626;
    border-radius: 8px;
    padding: 1rem;
    color: #fca5a5;
    text-align: center;
    font-size: 0.9rem;
    margin-top: 1rem;
}

.hidden {
    display: none;
}

/* Tablet Styles */
@media (min-width: 768px) {
    .container {
        padding: 2rem;
    }
    
    header h1 {
        font-size: 3rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .dataset-buttons {
        grid-template-columns: 1fr 1fr 1fr 1fr;
        gap: 2rem;
        max-width: 1000px;
    }
    
    .dataset-btn {
        min-height: 160px;
        font-size: 1.1rem;
    }
    
    .btn-text {
        font-size: 1.2rem;
    }
    
    .tables-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .table-container {
        padding: 2rem;
    }
    
    th, td {
        padding: 1rem 0.75rem;
        font-size: 0.95rem;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .container {
        padding: 3rem;
    }
    
    header {
        margin-bottom: 4rem;
    }
    
    header h1 {
        font-size: 3.5rem;
    }
    
    .dataset-buttons {
        gap: 2.5rem;
        max-width: 1200px;
    }
    
    .dataset-btn {
        min-height: 180px;
        font-size: 1.2rem;
    }
    
    .btn-text {
        font-size: 1.3rem;
    }
    
    .tables-container {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
    
    .table-container {
        padding: 2.5rem;
    }
    
    th, td {
        padding: 1.25rem 1rem;
        font-size: 1rem;
    }
}

/* Large Desktop Styles */
@media (min-width: 1440px) {
    .tables-container {
        grid-template-columns: 1fr 1fr 1fr 1fr;
        gap: 2rem;
    }
    
    .table-container {
        padding: 2rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .dataset-btn {
        transition: none;
    }
    
    .dataset-btn.parsed {
        animation: none;
    }
    
    @keyframes glowPulse {
        0%, 100% {
            box-shadow: 0 0 20px var(--accent-green-glow), 0 4px 16px var(--shadow-dark);
        }
    }
}

/* Focus styles for accessibility */
.dataset-btn:focus {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #1a1a1a;
        --bg-tertiary: #2a2a2a;
        --text-primary: #ffffff;
        --text-secondary: #ffffff;
        --border-color: #ffffff;
        --accent-green: #00ff00;
    }
}