:root {
    color-scheme: light;
    --bg: #f7f4ef;
    --text: #1b1f2a;
    --muted: #5b6374;
    --surface: #ffffff;
    --surface-alt: #f0ede7;
    --accent: #f26b4f;
    --accent-strong: #f04a2f;
    --shadow: 0 30px 60px rgba(24, 28, 38, 0.12);
    --border: rgba(20, 23, 32, 0.12);
    --pill: rgba(242, 107, 79, 0.18);
}

body.theme-dark {
    color-scheme: dark;
    --bg: #0d0f14;
    --text: #f2f2f4;
    --muted: #a7b0c0;
    --surface: #161a24;
    --surface-alt: #11151f;
    --accent: #f9c74f;
    --accent-strong: #f6b335;
    --shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
    --border: rgba(242, 242, 244, 0.12);
    --pill: rgba(249, 199, 79, 0.18);
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Space Grotesk", "Avenir Next", "Futura", sans-serif;
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
}

.ambient {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at top left, rgba(242, 107, 79, 0.2), transparent 55%),
        radial-gradient(circle at 10% 70%, rgba(89, 124, 255, 0.15), transparent 55%),
        radial-gradient(circle at 90% 30%, rgba(249, 199, 79, 0.18), transparent 45%);
    pointer-events: none;
    z-index: -1;
}

.page {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4.5rem 1.5rem 3rem;
}

.hero {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-size: 0.7rem;
    color: var(--muted);
    margin: 0 0 0.6rem;
}

h1 {
    font-size: clamp(2.2rem, 4vw, 3.6rem);
    margin: 0 0 1rem;
}

.subtitle {
    font-size: 1.05rem;
    color: var(--muted);
    line-height: 1.6;
    margin: 0 0 1.8rem;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 0.9rem;
}

.primary-btn {
    background: var(--accent);
    color: #101218;
    padding: 0.8rem 1.6rem;
    border-radius: 999px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.primary-btn:hover {
    background: var(--accent-strong);
    transform: translateY(-2px);
}

.primary-btn:disabled {
    cursor: wait;
    opacity: 0.7;
    transform: none;
}

.upload-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.file-input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.ghost-btn {
    background: transparent;
    color: var(--text);
    padding: 0.8rem 1.4rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: border 0.2s ease, background 0.2s ease;
}

.ghost-btn:hover {
    background: var(--surface-alt);
    border-color: transparent;
}

.microcopy {
    font-size: 0.85rem;
    color: var(--muted);
    margin: 0;
}

.hero-card {
    background: var(--surface);
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 1rem;
}

.status-pill {
    background: var(--pill);
    color: var(--text);
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.webcam-frame {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 18px;
    background: var(--surface-alt);
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 1px dashed var(--border);
    margin-bottom: 1rem;
}

.webcam-frame canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.webcam-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.webcam-placeholder {
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
    padding: 1.5rem;
}

.label-stack {
    display: grid;
    gap: 0.7rem;
}

.label-row {
    display: grid;
    gap: 0.4rem;
}

.label-row span {
    font-size: 0.85rem;
    color: var(--muted);
}

.meter {
    position: relative;
    height: 8px;
    border-radius: 999px;
    background: var(--surface-alt);
    overflow: hidden;
}

.meter-fill {
    position: absolute;
    inset: 0;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent-strong));
    transition: width 0.25s ease;
}

.result-text {
    font-size: 1rem;
    font-weight: 600;
    margin-top: 0.4rem;
}

.insight-grid {
    margin-top: 3.5rem;
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.insight {
    background: var(--surface);
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.insight h2 {
    margin: 0 0 0.6rem;
    font-size: 1.2rem;
}

.insight p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.site-footer {
    text-align: center;
    padding: 2rem 1.5rem 3rem;
    color: var(--muted);
    font-size: 0.85rem;
}

@media (max-width: 700px) {
    .page {
        padding-top: 3.5rem;
    }

    .hero-card {
        padding: 1.2rem;
    }
}