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

:root {
    --bg: #0a0a0c;
    --surface: #111115;
    --border: #1e1e24;
    --text: #c8c8d0;
    --text-dim: #5a5a66;
    --accent: #e8e8ec;
    --blue: #60a5fa;
    --blue-hover: #7db8fb;
    --green: #4ade80;
    --red: #f87171;
    --yellow: #fbbf24;
    --team-a: #4f8ef7;
    --team-b: #cf7b1e;
}

html { font-size: 16px; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Outfit', system-ui, sans-serif;
    font-weight: 300;
    line-height: 1.5;
    min-height: 100vh;
}

/* --- Navbar --- */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--accent);
    font-weight: 600;
    font-size: 1.05rem;
}

.navbar-brand img {
    height: 35px;
}

.navbar-actions { display: flex; align-items: center; gap: 0.5rem; }

.navbar-nav {
    display: flex;
    gap: 0.15rem;
    margin-left: auto;
    margin-right: 0.4rem;
}

.navbar-nav a {
    padding: 0.45rem 0.7rem;
    border-radius: 5px;
    color: var(--text-dim);
    text-decoration: none;
    font: 700 0.78rem 'JetBrains Mono', monospace;
    transition: background 0.2s, color 0.2s;
}

.navbar-nav a:hover { color: var(--text); background: var(--border); }
.navbar-nav a[aria-current="page"] { color: var(--accent); background: var(--border); }

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    font-size: 1.1rem;
}

.btn-icon:hover {
    background: #2a2a32;
    color: var(--accent);
}

/* --- Layout --- */
.container {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem;
}

/* --- Forms --- */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--accent);
}

.form-control,
.form-select {
    width: 100%;
    padding: 0.55rem 0.75rem;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    -webkit-appearance: none;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235a5a66' d='M6 8.5L1 3.5h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.15);
}

.form-control::placeholder {
    color: var(--text-dim);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.form-check-input {
    width: 16px;
    height: 16px;
    accent-color: var(--blue);
    cursor: pointer;
}

.form-check-label {
    font-size: 0.92rem;
    color: var(--text);
    cursor: pointer;
}

.settings-row {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 0.75rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.settings-row .form-label {
    margin-bottom: 0;
    white-space: nowrap;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg);
    font-weight: 700;
}

.btn-primary:hover {
    background: #fff;
}

.btn-secondary {
    background: transparent;
    border-color: var(--border);
    color: var(--text-dim);
}

.btn-secondary:hover {
    border-color: #2a2a32;
    color: var(--text);
}

.btn-ghost {
    background: transparent;
    border-color: var(--border);
    color: var(--text-dim);
    font-size: 0.78rem;
}

.btn-ghost:hover {
    border-color: #2a2a32;
    color: var(--text);
    background: var(--surface);
}

/* --- Alert --- */
#errorAlert {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    width: 80%;
    max-width: 500px;
    padding: 0.75rem 1rem;
    border-radius: 0 0 8px 8px;
    font-size: 0.9rem;
    text-align: center;
    z-index: 1050;
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

#errorAlert.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

#errorAlert.alert-danger {
    background: #1a0a0a;
    border: 1px solid #4a1a1a;
    border-top: none;
    color: var(--red);
}

#errorAlert.alert-success {
    background: #0a1a0a;
    border: 1px solid #1a4a1a;
    border-top: none;
    color: var(--green);
}

/* --- Results --- */
.results-section {
    margin-top: 1.5rem;
}

.results-section h3 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.75rem;
    letter-spacing: 0.02em;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.results-header h3 { margin-bottom: 0; }

.result-item {
    display: flex;
    align-items: center;
    padding: 0.7rem 0.9rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 0.4rem;
}

.result-item .result-name {
    flex: 1;
    font-weight: 600;
    color: var(--accent);
}

.result-item .result-score {
    min-width: 70px;
    text-align: right;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: var(--accent);
}

.result-item .result-players {
    min-width: 90px;
    text-align: right;
    font-size: 0.82rem;
    color: var(--text-dim);
}

.points-diff {
    margin-top: 0.5rem;
    padding: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.points-diff strong {
    color: var(--accent);
}

.page-heading { margin-bottom: 1.25rem; }
.page-heading h1 { color: var(--accent); font-size: 1.3rem; font-weight: 600; }
.page-heading p, .form-help { color: var(--text-dim); font-size: 0.86rem; }
.form-help { display: block; margin-top: 0.3rem; }
.optional { color: var(--text-dim); font-weight: 300; }

/* --- Optional inputs, collapsed until wanted --- */
.extra-options {
    margin-bottom: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.extra-options > summary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 0.9rem;
    color: var(--text-dim);
    font-size: 0.84rem;
    cursor: pointer;
    list-style: none;
}

.extra-options > summary::-webkit-details-marker { display: none; }

.extra-options > summary::before {
    content: '+';
    font: 700 0.95rem 'JetBrains Mono', monospace;
}

.extra-options[open] > summary::before { content: '‘2'; }
.extra-options > summary:hover { color: var(--text); }
.extra-options > summary:focus-visible { outline: 1px solid var(--text-dim); outline-offset: -3px; }
.extra-options[open] > summary { color: var(--text); border-bottom: 1px solid var(--border); }

.extra-options-body { padding: 0.85rem 0.9rem 0.1rem; }
.extra-options-body .form-help { margin: 0 0 0.75rem; }

/* --- Simulation result --- */
.sim-panel {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.sim-panel h4 {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.9rem;
}

.verdict-label { color: var(--text-dim); font-size: 0.82rem; }

.verdict-value {
    font: 700 2.6rem/1.05 'JetBrains Mono', monospace;
    color: var(--accent);
    letter-spacing: -0.03em;
    margin: 0.1rem 0 0.35rem;
}

.verdict-reading { color: var(--text); font-size: 0.88rem; margin-bottom: 0.9rem; }

.split-bar { display: flex; gap: 2px; height: 12px; }
.split-seg { border-radius: 3px; min-width: 2px; }
.split-seg.team-a { background: var(--team-a); }
.split-seg.team-b { background: var(--team-b); }
.split-seg.tie { background: var(--text-dim); }

.split-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    margin-top: 0.55rem;
    color: var(--text-dim);
    font-size: 0.8rem;
}

.split-legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.split-legend b { color: var(--text); font: 400 0.8rem 'JetBrains Mono', monospace; }

.swatch { width: 9px; height: 9px; border-radius: 2px; flex: none; }
.swatch.team-a { background: var(--team-a); }
.swatch.team-b { background: var(--team-b); }
.swatch.tie { background: var(--text-dim); }

.split-breakdown {
    display: grid;
    gap: 0.45rem;
    margin-top: 0.7rem;
}

.split-breakdown > div {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.25rem 0.6rem;
}

.split-breakdown .name {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    min-width: 4.5rem;
    color: var(--text);
    font-size: 0.84rem;
}

.split-breakdown .value { font: 700 1rem 'JetBrains Mono', monospace; color: var(--accent); }
.split-breakdown .detail { color: var(--text-dim); font-size: 0.76rem; }

.figure-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.figure-label { color: var(--text-dim); font-size: 0.76rem; }
.figure-value { font: 700 1.05rem 'JetBrains Mono', monospace; color: var(--accent); }

.gap-chart { position: relative; padding-top: 3.2rem; }

.gap-hint {
    position: absolute;
    top: 1.05rem;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.74rem;
}

.gap-tip {
    position: absolute;
    top: 0;
    transform: translateX(-50%);
    z-index: 2;
    pointer-events: none;
    padding: 0.4rem 0.6rem;
    background: #17171d;
    border: 1px solid #2a2a32;
    border-radius: 6px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
    white-space: nowrap;
}

.gap-tip-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-dim);
    font-size: 0.74rem;
}

.gap-tip-value b { font: 700 0.95rem 'JetBrains Mono', monospace; color: var(--accent); }
.gap-tip-value span { margin-left: 0.45rem; font-size: 0.72rem; color: var(--text-dim); }

.gap-bars {
    position: relative;
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 68px;
    cursor: crosshair;
}

.gap-bars:focus-visible { outline: 1px solid var(--text-dim); outline-offset: 4px; }

.gap-bars::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    border-left: 1px dashed #2a2a32;
}

.gap-bar { flex: 1; border-radius: 2px 2px 0 0; transition: opacity 0.12s ease; }
.gap-bars.is-reading .gap-bar { opacity: 0.3; }
.gap-bars.is-reading .gap-bar.is-active { opacity: 1; }
.gap-bar.team-a { background: var(--team-a); }
.gap-bar.team-b { background: var(--team-b); }
.gap-bar.tie { background: var(--text-dim); }

.gap-axis {
    display: flex;
    justify-content: space-between;
    margin-top: 0.35rem;
    color: var(--text-dim);
    font: 400 0.72rem 'JetBrains Mono', monospace;
}

.threshold {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
}

.threshold .figure-label { font-size: 0.82rem; }
.threshold .figure-value { font-size: 1.15rem; }

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.6rem 1rem;
}

.detail-label { color: var(--text-dim); font-size: 0.74rem; }
.detail-value { color: var(--text); font: 400 0.82rem 'JetBrains Mono', monospace; }

.simulation-note { color: var(--text-dim); font-size: 0.78rem; margin-top: 0.75rem; }
.btn:disabled { cursor: wait; opacity: 0.55; }

/* --- Hidden utility --- */
.hidden {
    display: none !important;
}

/* --- Modal --- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay.open {
    display: flex;
}

.modal-content {
    width: 100%;
    max-width: 460px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 1.4rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--accent);
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border);
}

@media (prefers-reduced-motion: reduce) {
    .gap-bar { transition: none; }
}

/* --- Responsive --- */
@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 1rem;
    }
    .settings-row {
        grid-template-columns: 1fr;
    }
    .figure-row { grid-template-columns: 1fr; gap: 0.5rem; }
    .navbar-brand span { display: none; }
    .navbar { padding: 0.75rem 0.75rem; }
    .navbar-nav a { padding: 0.45rem 0.5rem; font-size: 0.72rem; }
    .results-header { flex-wrap: wrap; gap: 0.5rem; }
}