/* Sports DB — design tokens */
:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --success: #059669;
    --success-hover: #047857;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --warning: #f59e0b;
    --warning-hover: #d97706;

    --bg: #f1f5f9;
    --bg-subtle: #f8fafc;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;

    --text: #0f172a;
    --text-muted: #475569;
    --text-on-primary: #ffffff;

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);

    --font-display: "Barlow Condensed", "Segoe UI", sans-serif;
    --font-body: "Fira Sans", "Segoe UI", sans-serif;

    --transition: 180ms ease;
    --header-stripe: repeating-linear-gradient(
        -12deg,
        transparent,
        transparent 18px,
        rgba(255, 255, 255, 0.04) 18px,
        rgba(255, 255, 255, 0.04) 20px
    );
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

body {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.5;
    color: var(--text);
    background-color: var(--bg);
    background-image:
        radial-gradient(ellipse at 0% 0%, rgba(30, 64, 175, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 100%, rgba(245, 158, 11, 0.05) 0%, transparent 45%);
    min-height: 100vh;
    padding: 24px 16px 100px;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
}

/* Header — track-lane motif */
.header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, #2563eb 100%);
    color: var(--text-on-primary);
    padding: 28px 32px 32px;
    text-align: center;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--header-stripe);
    pointer-events: none;
}

.header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent) 0%, #fbbf24 50%, var(--accent) 100%);
}

.header h1 {
    position: relative;
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.header p {
    position: relative;
    font-size: 0.95rem;
    opacity: 0.88;
    font-weight: 400;
}

/* Tabs */
.tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bg-subtle);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: thin;
}

.tab {
    padding: 10px 16px;
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: transparent;
    white-space: nowrap;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.tab:hover {
    background: var(--card-bg);
    color: var(--text);
    border-color: var(--border);
}

.tab:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

.tab.active {
    background: var(--primary);
    color: var(--text-on-primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* Tab panels */
.tab-content {
    display: none;
    padding: 24px 28px 32px;
    animation: panel-in 0.25s ease;
}

.tab-content.active {
    display: block;
}

@keyframes panel-in {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    text-align: left;
    overflow: hidden;
    transition: box-shadow var(--transition), border-color var(--transition);
}

.stat-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent), var(--primary-light));
}

.stat-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--border-strong);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* Forms */
.form-section {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    padding: 22px 24px;
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.form-section h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--primary-dark);
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
}

.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 200px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

input,
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--text);
    background: var(--card-bg);
    transition: border-color var(--transition), box-shadow var(--transition);
}

input:hover,
select:hover,
textarea:hover {
    border-color: var(--primary-light);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
}

/* Buttons */
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--text-on-primary);
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-right: 8px;
    margin-bottom: 8px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

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

button:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

button:active {
    transform: translateY(1px);
}

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

.btn-success:hover {
    background: var(--success-hover);
}

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

.btn-danger:hover {
    background: var(--danger-hover);
}

.btn-warning {
    background: var(--warning);
    color: var(--primary-dark);
}

.btn-warning:hover {
    background: var(--warning-hover);
}

/* Search */
.search-box {
    margin-bottom: 16px;
}

.search-box input {
    max-width: 360px;
    padding-left: 36px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23475569' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.242 1.156a5 5 0 1 1 0-10 5 5 0 0 1 0 10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 12px center;
}

/* Tables */
.table-container {
    max-height: 440px;
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

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

th,
td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: var(--bg-subtle);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    white-space: nowrap;
}

tbody tr {
    transition: background var(--transition);
}

tbody tr:nth-child(even) {
    background: rgba(248, 250, 252, 0.7);
}

tbody tr:hover {
    background: rgba(59, 130, 246, 0.06);
}

.actions-cell {
    white-space: nowrap;
}

.edit-btn,
.delete-btn {
    padding: 6px 12px;
    font-size: 0.75rem;
    margin-right: 6px;
    margin-bottom: 0;
}

.edit-btn {
    background: var(--warning);
    color: var(--primary-dark);
}

.edit-btn:hover {
    background: var(--warning-hover);
}

.delete-btn {
    background: var(--danger);
    color: var(--text-on-primary);
}

.delete-btn:hover {
    background: var(--danger-hover);
}

/* Utility panel */
.utility-buttons {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.utility-buttons button {
    margin: 0;
    width: 100%;
    min-width: 160px;
}

.file-input {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 12px 8px 120px;
    }

    .tab-content {
        padding: 16px;
    }

    .form-section {
        padding: 16px;
    }

    .utility-buttons {
        left: 12px;
        right: 12px;
        bottom: 12px;
        flex-direction: row;
        flex-wrap: wrap;
    }

    .utility-buttons button {
        flex: 1;
        min-width: 140px;
    }

    th,
    td {
        padding: 10px;
        font-size: 0.8125rem;
    }
}