:root {
    /* Light Theme Palette */
    --c-bg: #f8fafc;
    --c-surface: #ffffff;
    --c-border: #e2e8f0;
    --c-text: #0f172a;
    --c-text-muted: #64748b;
    --c-primary: #3b82f6;
    --c-primary-hover: #2563eb;
    --c-success: #10b981;
    --c-success-hover: #059669;
    --c-danger: #ef4444;
    --c-warning: #f59e0b;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --radius-md: 8px;
    --radius-lg: 12px;
}

body.dark-theme {
    /* Dark Theme Palette */
    --c-bg: #0f172a;
    --c-surface: #1e293b;
    --c-border: #334155;
    --c-text: #f8fafc;
    --c-text-muted: #94a3b8;
    --c-primary: #3b82f6;
    --c-primary-hover: #60a5fa;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--c-bg);
    color: var(--c-text);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-sm);
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--c-primary);
}

/* Containers */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.view { display: none; animation: fadeIn 0.4s ease forwards; }
.view.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Typography & Layout */
h2, h3, h4 { margin-bottom: 1rem; color: var(--c-text); }
.text-muted { color: var(--c-text-muted); }
.breadcrumbs { margin-bottom: 1rem; font-size: 0.9rem; }
.breadcrumbs a { color: var(--c-primary); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.card, .panel {
    background-color: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.grid-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.btn-primary { background-color: var(--c-primary); color: white; }
.btn-primary:hover { background-color: var(--c-primary-hover); transform: translateY(-1px); }
.btn-success { background-color: var(--c-success); color: white; }
.btn-success:hover { background-color: var(--c-success-hover); }
.btn-secondary { background-color: var(--c-surface); color: var(--c-text); border: 1px solid var(--c-border); }
.btn-secondary:hover { background-color: var(--c-border); }
.btn-icon { background: none; font-size: 1.5rem; }

/* Forms */
.form-group input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    background-color: var(--c-bg);
    color: var(--c-text);
    font-family: inherit;
}
.setup-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}
@media(max-width: 768px) { .setup-grid { grid-template-columns: 1fr; } }

/* List Group */
.list-group { list-style: none; }
.list-group li {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--c-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.list-group li:last-child { border-bottom: none; }

/* Tour Dashboard */
.tour-header { margin-bottom: 2rem; display: flex; justify-content: space-between; align-items: center; }
.round-card { margin-bottom: 2rem; }
.round-header { display: flex; justify-content: space-between; margin-bottom: 1rem; border-bottom: 1px solid var(--c-border); padding-bottom: 0.5rem;}

.match-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.match-item {
    background-color: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    user-select: none;
}
/* Drag and drop hover states */
.match-item.draggable { cursor: grab; }
.match-item.draggable:active { cursor: grabbing; box-shadow: var(--shadow-md); }
.match-item.drag-over { border: 2px dashed var(--c-primary); background-color: rgba(59, 130, 246, 0.1); }
.match-item.drag-invalid { border: 2px dashed var(--c-danger); background-color: rgba(239, 68, 68, 0.1); }
.match-item.collision-warning { border-left: 4px solid var(--c-danger); }

.match-player-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0;
}
.score-badge {
    background-color: var(--c-surface);
    border: 1px solid var(--c-border);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    min-width: 30px;
    text-align: center;
}

/* Modals */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(2px);
    display: none; z-index: 1000;
}
.modal {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background-color: var(--c-surface);
    padding: 2rem; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    z-index: 1001; display: none; width: 90%; max-width: 500px;
    border: 1px solid var(--c-border);
}

.score-input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.5rem 0; }
.input-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.input-row input { width: 60px; padding: 0.25rem; background: var(--c-bg); color: var(--c-text); border: 1px solid var(--c-border); border-radius: 4px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 1rem; }

/* Standings */
.table-container { overflow-x: auto; }
.standings-table { width: 100%; border-collapse: collapse; text-align: left; }
.standings-table th, .standings-table td { padding: 1rem; border-bottom: 1px solid var(--c-border); }
.standings-table th { color: var(--c-text-muted); font-weight: 600; }
.standings-table tr:hover { background-color: rgba(0,0,0,0.05); }

.withdrawn td { text-decoration: line-through; opacity: 0.6; }

/* Status Labels */
.badge { padding: 0.2rem 0.5rem; border-radius: 12px; font-size: 0.8rem; font-weight: 600;}
.badge-draft { background-color: var(--c-border); color: var(--c-text); }
.badge-active { background-color: var(--c-success); color: white; }

/* PRINT STYLES */
.print-only { display: none; }
@media print {
    body { background: white; color: black; font-size: 12px; }
    .dont-print { display: none !important; }
    .print-only { display: block; }
    
    .scorecard {
        page-break-inside: avoid;
        border: 1px dashed #ccc;
        margin-bottom: 15px;
        padding: 10px;
        width: 100%;
        display: flex;
        flex-direction: column;
    }
    .sc-header { display: flex; justify-content: space-between; border-bottom: 1px solid #000; padding-bottom: 5px; margin-bottom: 5px; font-weight: bold;}
    .sc-players { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 10px;}
    .sc-table { width: 100%; border-collapse: collapse; margin-bottom: 10px; }
    .sc-table th, .sc-table td { border: 1px solid #000; padding: 5px; text-align: center; height: 30px; }
    .sc-signatures { display: flex; justify-content: space-between; margin-top: 10px; }
    .sc-sig-line { border-top: 1px solid #000; width: 45%; text-align: center; font-size: 10px; padding-top: 2px;}
}