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

:root {
    --red: #b9061e;
    --red-dark: #8c0416;
    --red-glow: rgba(185, 6, 30, 0.4);
    --black: #0a0a0a;
    --dark: #111111;
    --card: #181818;
    --border: #2a2a2a;
    --text: #f0f0f0;
    --text-muted: #888;
    --gold: #f5a623;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--black);
    color: var(--text);
    font-family: 'Roboto', Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── HEADER ── */
.header {
    background: linear-gradient(180deg, #000 0%, #0d0d0d 100%);
    border-bottom: 3px solid var(--red);
    padding: 20px 5%;
    text-align: center;
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.logo {
    font-family: 'Oswald', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 4px;
    line-height: 1;
    margin-bottom: 6px;
}

.logo-br {
    color: var(--red);
}

.logo-perf {
    color: #fff;
}

.header-tagline {
    color: var(--text-muted);
    font-size: 0.85rem;
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* ── MAIN ── */
.main {
    flex: 1;
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
    padding: 0 5% 60px;
}

/* ── HERO ── */
.hero {
    text-align: center;
    padding: 50px 0 40px;
}

.hero-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-title span {
    color: var(--red);
}

.hero-sub {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── TOOL CARD ── */
.tool-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-top: 4px solid var(--red);
    border-radius: 0 0 12px 12px;
    padding: 36px 32px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.6);
}

/* ── SELECTS GRID ── */
.selects-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.sel-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sel-label {
    font-family: 'Oswald', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sel-num {
    color: var(--red);
    font-weight: 700;
    font-size: 0.85rem;
}

.sel-wrap {
    position: relative;
}

.sel-drop {
    width: 100%;
    appearance: none;
    -webkit-appearance: none;
    background: #0f0f0f;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    padding: 12px 40px 12px 14px;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.sel-drop:focus {
    border-color: var(--red);
    box-shadow: 0 0 0 2px var(--red-glow);
}

.sel-drop:not(:disabled):hover {
    border-color: #444;
}

.sel-drop:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.sel-drop option {
    background: #1a1a1a;
    color: var(--text);
}

.sel-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--red);
    pointer-events: none;
    font-size: 0.7rem;
}

/* ── RESULT CARD ── */
.result-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-top: 4px solid var(--red);
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0,0,0,0.6), 0 0 30px var(--red-glow);
    animation: slideDown 0.35s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    background: linear-gradient(90deg, #1a0305 0%, #1a1a1a 100%);
    border-bottom: 1px solid var(--border);
    gap: 16px;
    flex-wrap: wrap;
}

.result-vehicle {
    font-family: 'Oswald', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: 1px;
}

.result-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.result-badge {
    background: var(--red);
    color: #fff;
    font-family: 'Oswald', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 3px;
    padding: 5px 14px;
    border-radius: 3px;
    white-space: nowrap;
}

.result-badge-s2 {
    background: #e07b00;
}

/* ── RESULT TABLE ── */
.result-table {
    padding: 24px 28px 0;
}

.result-row {
    display: grid;
    grid-template-columns: 150px 1fr 1fr;
    border-bottom: 1px solid var(--border);
}

.result-row:last-child {
    border-bottom: none;
}

.result-cell {
    padding: 14px 16px;
    font-size: 1rem;
    text-align: center;
}

.result-row-head .result-cell {
    font-family: 'Oswald', sans-serif;
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-muted);
    padding-top: 8px;
    padding-bottom: 8px;
}

.result-row-label {
    font-family: 'Oswald', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--text-muted);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 6px;
}

.stag {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 5px;
    border-radius: 3px;
    letter-spacing: 0;
}

.stag-1 { background: var(--red); color: #fff; }
.stag-2 { background: #e07b00; color: #fff; }

.result-row-s1 { background: rgba(185, 6, 30, 0.06); }
.result-value {
    font-weight: 700;
    color: var(--red);
    font-size: 1.15rem;
}

.result-row-gain { background: rgba(245, 166, 35, 0.05); }
.result-gain {
    color: var(--gold);
    font-weight: 700;
    font-size: 1.05rem;
}

.result-row-s2 { background: rgba(224, 123, 0, 0.07); }
.result-value-s2 {
    font-weight: 700;
    color: #e07b00;
    font-size: 1.15rem;
}

.result-row-gain-s2 { background: rgba(224, 123, 0, 0.04); }
.result-gain-s2 {
    color: #e07b00;
    font-weight: 700;
    font-size: 1.05rem;
}

/* ── PROGRESS BARS ── */
.result-bars {
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    border-top: 1px solid var(--border);
    margin-top: 16px;
}

.bar-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bar-label {
    font-family: 'Oswald', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--text-muted);
}

.bar-track {
    height: 10px;
    background: #1e1e1e;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.bar-before,
.bar-s1,
.bar-s2 {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    border-radius: 6px;
    transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.bar-before {
    background: #444;
    z-index: 1;
}

.bar-s1 {
    background: linear-gradient(90deg, var(--red-dark), var(--red));
    z-index: 2;
    box-shadow: 0 0 8px var(--red-glow);
}

.bar-s2 {
    background: linear-gradient(90deg, #b35e00, #e07b00);
    z-index: 3;
    box-shadow: 0 0 8px rgba(224,123,0,0.4);
}

.bar-legend {
    display: flex;
    gap: 20px;
    font-size: 0.72rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.legend-after { color: var(--red); }
.legend-s2    { color: #e07b00; }

/* ── DISCLAIMER ── */
.result-disclaimer {
    font-size: 1.1rem;
    color: #555;
    padding: 0 28px 20px;
    font-style: italic;
}

/* ── NO STAGE 1 STATE ── */
.no-stage1 .result-row-s1 { background: rgba(255,255,255,0.02); }
.no-stage1 .result-row-s1 .result-value { color: var(--text-muted); font-weight: 400; font-size: 1rem; }
.no-stage1 .result-row-gain .result-gain { color: var(--text-muted); font-weight: 400; font-size: 0.95rem; }

/* ── FOOTER ── */
.footer {
    border-top: 1px solid var(--border);
    padding: 20px 5%;
    text-align: center;
    color: #444;
    font-size: 0.8rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    .selects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .logo {
        font-size: 2.2rem;
    }

    .hero-title {
        font-size: 1.4rem;
    }

    .tool-card {
        padding: 24px 18px;
    }

    .selects-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .result-row {
        grid-template-columns: 120px 1fr 1fr;
    }

    .result-cell {
        padding: 12px 8px;
        font-size: 0.9rem;
    }

    .result-header {
        padding: 16px 18px;
    }

    .result-table,
    .result-bars,
    .result-disclaimer {
        padding-left: 18px;
        padding-right: 18px;
    }
}