@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,700;1,400&family=VT323&family=Source+Sans+3:wght@300;400;600&display=swap');

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

:root {
    --tomato:        #d93d24;
    --tomato-dark:   #b5311b;
    --tomato-glow:   rgba(217, 61, 36, 0.14);
    --card-bg:       #faf8f4;
    --card-surface:  #f0ebe1;
    --card-raised:   #e8e1d5;
    --border:        rgba(60, 40, 20, 0.14);
    --border-strong: rgba(60, 40, 20, 0.22);
    --text-primary:  #140e04;
    --text-secondary:#2e2215;
    --text-dim:      #6b5440;
    --gold:          #8a6a10;
    --blue:          #1e6a94;
    --radius:        6px;
    --radius-lg:     10px;
}

/* ── Body & background ── */
body {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 18px;
    font-weight: 300;
    color: var(--text-primary);
    min-height: 100vh;
    background-color: #0a0602;
    background-image: url('background.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}

/* ── Page wrapper ── */
.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 32px 16px 64px;
    background: linear-gradient(
        to bottom,
        rgba(6, 3, 1, 0.82) 0%,
        rgba(6, 3, 1, 0.65) 35%,
        rgba(6, 3, 1, 0.82) 100%
    );
}

/* ── Card ── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    box-shadow:
        0 4px 6px rgba(0, 0, 0, 0.3),
        0 20px 60px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

/* ── Header ── */
.card-header {
    padding: 36px 32px 28px;
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.eyebrow {
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 4px;
}

h1 {
    font-family: 'VT323', monospace;
    font-size: clamp(3.2rem, 9vw, 4.4rem);
    font-weight: 400;
    line-height: 0.82;
    letter-spacing: 0.04em;
    color: var(--tomato);
    margin-bottom: 12px;
}

.byline {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.byline a {
    color: var(--text-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.15s;
}

.byline a:hover { color: var(--tomato); }

.intro {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 420px;
    margin: 0 auto 14px;
}

.video-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--tomato);
    text-decoration: none;
    transition: opacity 0.15s;
}

.video-link:hover { opacity: 0.7; }

.video-link svg {
    width: 15px;
    height: 15px;
    fill: currentColor;
}

/* ── Card body ── */
.card-body {
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ── Steps ── */
.step {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.step-label {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.step-num {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--tomato);
    white-space: nowrap;
    flex-shrink: 0;
}

.step-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.step-desc {
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--text-secondary);
}

.step-desc a {
    color: var(--tomato);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.step-desc a:hover { opacity: 0.75; }

/* ── Inputs ── */
.input-row {
    display: flex;
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input-row:focus-within {
    border-color: var(--tomato);
    box-shadow: 0 0 0 3px var(--tomato-glow);
}

.input-label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    background: var(--card-surface);
    padding: 0 16px;
    display: flex;
    align-items: center;
    border-right: 1.5px solid var(--border-strong);
    white-space: nowrap;
    min-width: 90px;
}

.input-row input[type="number"] {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: 'Source Sans 3', sans-serif;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-primary);
    padding: 14px 16px;
    min-width: 0;
    -moz-appearance: textfield;
}

.input-row input[type="number"]::placeholder {
    color: var(--text-dim);
}

.input-row input[type="number"]::-webkit-outer-spin-button,
.input-row input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.input-row select {
    border: none;
    border-left: 1.5px solid var(--border-strong);
    outline: none;
    background: var(--card-surface);
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 14px 30px 14px 12px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238a7560'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    min-width: 90px;
}

.suffix {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
    background: var(--card-surface);
    padding: 0 16px;
    display: flex;
    align-items: center;
    border-left: 1.5px solid var(--border-strong);
}

.error-msg {
    font-size: 0.75rem;
    color: var(--tomato);
    font-weight: 600;
    min-height: 1.1em;
    display: block;
}

/* ── Calculate button ── */
.btn-calculate {
    display: block;
    width: 100%;
    padding: 17px;
    background: var(--tomato);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    -webkit-tap-highlight-color: transparent;
}

.btn-calculate:hover  { background: var(--tomato-dark); }
.btn-calculate:active { transform: scale(0.985); }

/* ── Divider ── */
.divider {
    height: 1px;
    background: var(--border);
    margin: 0 -32px;
    width: calc(100% + 64px);
}

/* ── Results ── */
.results {
    display: none;
    flex-direction: column;
    gap: 20px;
}

.results.visible { display: flex; }

.result-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.result-card {
    background: var(--card-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-align: center;
}

.result-card-head {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #fff;
    background: var(--tomato);
    padding: 10px 10px;
    border-bottom: 1px solid var(--border);
}

.result-card-body {
    padding: 20px 14px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    min-height: 138px;
    justify-content: center;
}

/* ── Result icons ── */
.result-icon {
    display: block;
    width: 38px;
    height: 38px;
    margin-bottom: 6px;
}

.result-icon.sugar { color: var(--gold); }
.result-icon.water { color: var(--blue); }

.result-action {
    font-size: 0.58rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.result-amount {
    font-family: 'Playfair Display', serif;
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.result-amount small {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
}

.result-ingredient {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.result-ingredient.sugar { color: var(--gold); }
.result-ingredient.water { color: var(--blue); }

.result-perfect {
    font-size: 0.8rem;
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 0 6px;
}

/* ── Instructions ── */
.instructions {
    display: none;
    flex-direction: column;
    gap: 10px;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
    background: var(--card-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
}

.instructions.visible { display: flex; }
.instructions p { margin: 0; }

.instructions a {
    color: var(--tomato);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.instructions .shelf-life {
    font-style: italic;
    color: var(--text-dim);
    font-size: 0.78rem;
}

/* ── Footer ── */
.card-footer {
    padding: 20px 32px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: center;
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--text-dim);
}

.card-footer a {
    color: var(--text-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.15s;
}

.card-footer a:hover { color: var(--tomato); }

.card-footer .license {
    font-size: 0.68rem;
    opacity: 0.6;
}

/* ── Video modal ── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(4, 2, 1, 0.92);
    align-items: center;
    justify-content: center;
}

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

.modal-box {
    position: relative;
    width: 92%;
    max-width: 640px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8);
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 12px;
    z-index: 10;
    background: rgba(6, 3, 1, 0.7);
    border: none;
    color: #fff;
    font-size: 1.2rem;
    line-height: 1;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.modal-close:hover { background: var(--tomato); }

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: 0;
}

/* ── Mobile ── */
@media (max-width: 560px) {
    .page {
        padding: 16px 10px 48px;
    }

    .card-header {
        padding: 28px 20px 22px;
    }

    .card-body {
        padding: 22px 20px;
        gap: 20px;
    }

    .card-footer {
        padding: 18px 20px;
    }

    .divider {
        margin: 0 -20px;
        width: calc(100% + 40px);
    }

    .intro {
        font-size: 0.85rem;
    }

    .input-row input[type="number"] {
        font-size: 1rem;
        padding: 15px 12px;
    }

    .input-row select {
        font-size: 0.8rem;
        padding: 15px 28px 15px 10px;
        min-width: 82px;
    }

    .input-label {
        min-width: 76px;
        padding: 0 10px;
        font-size: 0.62rem;
    }

    .btn-calculate {
        padding: 18px;
        font-size: 0.85rem;
    }

    .result-cards {
        grid-template-columns: 1fr;
    }

    .result-amount {
        font-size: 1.55rem;
    }

    .result-icon {
        width: 32px;
        height: 32px;
    }

    .result-card-body {
        min-height: 120px;
        padding: 16px 10px 18px;
    }
}