/* Reset and base styles */
:root {
    /* Map to shared design tokens from ../styles.css */
    --bg-1: var(--bg-primary);
    --bg-2: var(--bg-secondary);
    --text: var(--text-primary);
    --muted: var(--text-secondary);
    --card: var(--bg-card);
    --card-border: var(--border-subtle);
    --panel-1: rgba(20, 28, 45, 0.7);
    --panel-2: rgba(20, 30, 55, 0.8);

    /* Accents */
    --accent: var(--accent-blue);
    --accent-strong: var(--accent-blue-bright);
    --accent-contrast: #060a12;

    /* Status colors */
    --success: var(--accent-green);
    --warning: var(--accent-amber);
    --danger:  var(--accent-red);
    --success-bg: rgba(16, 185, 129, 0.12);
    --warning-bg: rgba(245, 158, 11, 0.12);
    --danger-bg:  rgba(239, 68, 68, 0.12);

    /* Tables */
    --table-header: rgba(20, 28, 45, 0.85);
    --table-border: rgba(255,255,255,0.08);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-1);
    min-height: 100vh;
    color: var(--text);
}

.site { display: grid; grid-template-rows: auto 1fr auto; min-height: 100vh; }
.topbar { display:flex; justify-content:space-between; align-items:center; padding:10px 16px; color:var(--text); background: rgba(0,0,0,0.25); border-bottom:1px solid var(--card-border); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.topbar .brand { font-weight:700; letter-spacing:.5px; }
.topbar .subtitle { opacity:.85; font-size:.9rem; }

.layout { display:grid; grid-template-columns: minmax(340px, 380px) 1fr; gap:18px; width: 100%; max-width: none; margin: 12px auto; padding: 0 18px; }
.panel.left { display:flex; flex-direction:column; gap:12px; }
.panel.right { display:grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap:12px; align-items:start; }

.bottombar { color:var(--text); padding:10px 16px; border-top:1px solid var(--card-border); background: rgba(0,0,0,0.25); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Main layout */
main {
    display: block;
}

@media (max-width: 1024px) {
    .layout { grid-template-columns: 1fr; }
    .panel.right { grid-template-columns: 1fr; }
}

/* Cards */
.card {
    background: var(--card);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--card-border);
    margin-bottom: 15px;
}

.card h2 {
    color: var(--accent);
    margin-bottom: 15px;
    font-size: 1.3rem;
    border-bottom: 2px solid var(--card-border);
    padding-bottom: 8px;
}

/* Tiny header toggle */
.card h2.with-toggle { display:flex; align-items:center; justify-content:space-between; gap:8px; }
.mini-toggle { display:inline-flex; align-items:center; gap:6px; font-size:.72rem; color:var(--muted); opacity:.85; }
.mini-toggle input[type="checkbox"]{ width:14px; height:14px; accent-color: var(--accent); }
.mini-toggle-label{ font-size:.72rem; }

/* Form styles */
.form-group { margin-bottom: 15px; }
.form-group:empty { display: none; }

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--muted);
}

.help-btn { display:inline-flex; align-items:center; justify-content:center; margin-left:4px; padding:0 8px; height:24px; line-height:1; font-weight:700; border:1px solid var(--card-border); background: var(--panel-1); color: var(--text); cursor:pointer; }

.form-group input { width: 100%; padding: 10px 12px; height: 36px; border: 2px solid var(--card-border); border-radius: 10px; font-size: 1rem; transition: border-color 0.3s ease; color: var(--text); background: #121820; }

.form-group select { width: 100%; padding: 8px 12px; height: 36px; border: 2px solid var(--card-border); border-radius: 10px; font-size: 1rem; background: #121820; color: var(--text); transition: border-color 0.3s ease; }

.form-group textarea { width: 100%; padding: 10px 12px; border: 2px solid var(--card-border); border-radius: 10px; font-size: 0.95rem; transition: border-color 0.3s ease; color: var(--text); background: #121820; line-height: 1.4; }

.hint { margin-top: 8px; font-size: 0.85rem; line-height: 1.35; }

.form-group input:disabled, .form-group select:disabled, .form-group button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(46, 163, 255, 0.15);
}

/* Button */
.calculate-btn { width: 100%; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%); color: var(--text); border: none; padding: 12px; border-radius: 8px; font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease; margin-top: 8px; }

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(46, 163, 255, 0.35);
}

.calculate-btn:active {
    transform: translateY(0);
}

/* Results section */
.results-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.results-card, .strategy-card {
    min-height: 200px;
}

.results-content, .strategy-content {
    line-height: 1.6;
}

.results-content p, .strategy-content p {
    margin-bottom: 10px;
    color: var(--muted);
}

/* Result highlights */
.highlight { background: var(--success-bg); color: var(--text); padding:12px; border-radius:0; margin:8px 0; font-weight:600; border-left:4px solid var(--success); }
.warning   { background: var(--warning-bg); color: var(--text); padding:12px; border-radius:0; margin:8px 0; font-weight:600; border-left:4px solid var(--warning); }
.danger    { background: var(--danger-bg);  color: var(--text); padding:12px; border-radius:0; margin:8px 0; font-weight:600; border-left:4px solid var(--danger); }

/* Pit stop list */
.pit-stop { background: #111821; border-left: 4px solid var(--accent); padding:12px; margin:8px 0; border-radius:0; }
.pit-stop h4 { color: var(--text); margin-bottom:6px; }
.pit-stop p { margin:4px 0; color: var(--muted); }

/* Dashboard styling */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.dashboard-card {
    background: linear-gradient(135deg, var(--panel-1) 0%, var(--panel-2) 100%);
    border-radius: 0;
    padding: 18px;
    color: var(--text);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
    border: 1px solid var(--card-border);
}

.dashboard-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 15px;
    color: var(--muted);
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 8px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
}

.stat-item {
    text-align: center;
    padding: 12px 8px;
    background: rgba(255,255,255,0.04);
    border-radius: 0;
    border: 1px solid var(--card-border);
    transition: background 0.3s ease;
}

.stat-item:hover {
    background: rgba(255,255,255,0.08);
}

.stat-number {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 4px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.stat-unit {
    font-size: 0.7rem;
    color: var(--muted);
    margin-bottom: 4px;
    font-weight: 500;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--muted);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.strategy-status {
    padding: 15px;
    text-align: center;
}

.status-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.status-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.status-text {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.3;
}

/* Status color variants */
.status-success .stat-number {
    color: var(--success);
}

.status-warning .stat-number {
    color: var(--warning);
}

.status-danger .stat-number {
    color: var(--danger);
}

.status-success .status-icon {
    color: var(--success);
}

.status-warning .status-icon {
    color: var(--warning);
}

.status-danger .status-icon {
    color: var(--danger);
}

/* Responsive dashboard */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-number {
        font-size: 1.3rem;
    }
    
    .dashboard-card {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-card {
        padding: 12px;
    }
    
    .stat-number {
        font-size: 1.2rem;
    }
}

/* Strategy details */
.stint-details {
    margin: 10px 0;
    font-size: 0.9rem;
}

.stint-details p {
    margin: 5px 0;
    padding: 3px 0;
}

.strategy-comparison {
    margin: 15px 0;
    background: #111821;
    padding: 12px;
    border-radius: 0;
}

.strategy-comparison table {
    font-size: 0.9rem;
}

.strategy-comparison th {
    font-weight: 600;
    color: var(--text);
}

.strategy-comparison td {
    color: var(--muted);
}

/* Optimizer table */
.optimizer-table { width:100%; border-collapse: collapse; font-size:.9rem; }
.optimizer-table th, .optimizer-table td { border:1px solid var(--table-border); padding:6px 8px; text-align:center; }
.optimizer-table th { background: var(--table-header); color: var(--text); font-weight:700; }
.optimizer-win { background: var(--success-bg); color: var(--text); border-left: 3px solid var(--success); }
.optimizer-lose { background: var(--danger-bg);  color: var(--text); border-left: 3px solid var(--danger); }

/* Footer */
footer {
    text-align: center;
    color: white;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:1000}
.modal{background:var(--card);border:1px solid var(--card-border);width:min(520px,90vw);padding:0;border-radius:0;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--card-border)}
.modal-body{padding:14px;color:var(--muted);line-height:1.5}
.close-btn{background:transparent;border:1px solid var(--card-border);color:var(--text);cursor:pointer;padding:2px 8px}
.modal-overlay.show{display:flex}

/* Preset buttons */
.compact-actions { display:flex; flex-direction:column; gap:12px; }
.presets { display:grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap:8px; }
.preset { padding:10px; min-height:36px; display:inline-flex; align-items:center; justify-content:center; background: var(--panel-1); color: var(--text); border:1px solid var(--card-border); cursor:pointer; font-weight:600; letter-spacing:.5px; border-radius: 8px; }
.preset:hover { background: var(--panel-2); }

/* Live control strip */
.live-control-card h2 { margin-bottom: 10px; }
.live-toggle-row { display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; margin-bottom:10px; }
.nudge-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap:10px; }
.nudge { background: var(--panel-1); border:1px solid var(--card-border); border-radius:8px; padding:10px; }
.nudge-label { font-weight:700; color: var(--muted); margin-bottom:6px; }
.nudge-controls { display:flex; gap:6px; }
.nudge-btn { flex:1; padding:8px 10px; background: var(--panel-2); color: var(--text); border:1px solid var(--card-border); border-radius:6px; cursor:pointer; font-weight:600; min-width:66px; }
.nudge-btn:hover { background: var(--accent); color: var(--accent-contrast); }
.nudge .hint { margin-top:6px; }

/* Live plan editor */
.live-plan-heading { display:flex; justify-content:space-between; gap:10px; flex-wrap:wrap; align-items:flex-start; }
.plan-source-buttons { display:flex; gap:8px; flex-wrap:wrap; }
.preset.ghost { background: transparent; border-style: dashed; opacity: 0.8; }
.live-plan-summary { margin: 10px 0; line-height:1.4; }
.live-plan-table { display:flex; flex-direction:column; gap:10px; }
.plan-row { padding:10px; border:1px solid var(--card-border); background:#111821; border-radius:8px; }
.plan-row-title { display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; color: var(--accent); font-weight:700; }
.plan-row-controls { display:flex; align-items:center; gap:8px; margin:6px 0; }
.plan-row-controls input { width:90px; text-align:center; }
.plan-row-controls .nudge-btn { flex: 0 0 74px; }
.plan-range-hints { display:grid; grid-template-columns: 74px 90px 74px; gap:8px; margin:-2px 0 6px; font-size:0.72rem; opacity:0.9; }
.plan-range-hints span { text-align:center; }
.plan-row-meta { color: var(--muted); font-size:0.9rem; display:flex; justify-content:space-between; gap:8px; flex-wrap:wrap; }

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.5s ease-out;
}

/* Racing-themed accents */
.checkered-pattern {
    background-image: 
        repeating-linear-gradient(
            45deg,
            #000,
            #000 10px,
            #fff 10px,
            #fff 20px
        );
    height: 4px;
    margin: 10px 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 20px;
    }
}