/* Cold Brew Calculator – by Anant */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,600;9..144,700&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ─── Reset & Root ─────────────────────────────────────── */
#cbc-app, #cbc-app * { box-sizing: border-box; }

#cbc-app {
    --cbc-bg:         #F4EFE8;
    --cbc-surface:    #FEFCF9;
    --cbc-surface2:   #EDE8DF;
    --cbc-brown:      #5C3D2E;
    --cbc-brown-mid:  #7A5140;
    --cbc-amber:      #C4843A;
    --cbc-amber-lt:   #F0C078;
    --cbc-cream:      #FDF6EC;
    --cbc-text:       #2B1F17;
    --cbc-text-muted: #8B7268;
    --cbc-border:     #DDD5C8;
    --cbc-water:      #4A90B8;
    --cbc-water-lt:   #EAF4FB;
    --cbc-coffee:     #5C3D2E;
    --cbc-coffee-lt:  #F5EDE5;
    --cbc-radius:     16px;
    --cbc-shadow:     0 2px 16px rgba(92,61,46,.10);

    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    color: var(--cbc-text);
    background: var(--cbc-bg);
    border-radius: 24px;
    max-width: 860px;
    margin: 0 auto 2em;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(92,61,46,.15);
}

/* ─── Header ────────────────────────────────────────────── */
.cbc-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 28px 32px 22px;
    background: var(--cbc-brown);
    color: #fff;
}

.cbc-coffee-icon {
    width: 52px;
    height: 52px;
    background: rgba(255,255,255,.12);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cbc-coffee-icon svg {
    width: 30px;
    height: 30px;
    color: var(--cbc-amber-lt);
}

.cbc-title {
    font-family: 'Fraunces', serif;
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 2px;
    color: #fff;
    letter-spacing: -.3px;
}

.cbc-subtitle {
    margin: 0;
    font-size: 13px;
    color: rgba(255,255,255,.65);
    font-weight: 300;
}

/* ─── Body Layout ───────────────────────────────────────── */
.cbc-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

@media (max-width: 640px) {
    .cbc-body { grid-template-columns: 1fr; }
}

/* ─── Panels ────────────────────────────────────────────── */
.cbc-panel {
    padding: 28px 28px 20px;
}

.cbc-inputs-panel {
    background: var(--cbc-surface);
    border-right: 1px solid var(--cbc-border);
}

.cbc-results-panel {
    background: var(--cbc-cream);
}

/* ─── Section ───────────────────────────────────────────── */
.cbc-section {
    margin-bottom: 24px;
}

.cbc-section-title {
    font-family: 'Fraunces', serif;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--cbc-text-muted);
    margin: 0 0 10px;
}

/* ─── Strength Toggle ───────────────────────────────────── */
.cbc-strength-toggle {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-bottom: 10px;
}

.cbc-strength-btn {
    background: var(--cbc-surface2);
    border: 1.5px solid var(--cbc-border);
    border-radius: 10px;
    padding: 8px 4px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    transition: all .18s ease;
    font-family: 'DM Sans', sans-serif;
}

.cbc-strength-btn:hover {
    border-color: var(--cbc-amber);
    background: var(--cbc-cream);
}

.cbc-strength-btn.active {
    background: var(--cbc-brown);
    border-color: var(--cbc-brown);
    color: #fff;
}

.cbc-btn-label {
    font-size: 12px;
    font-weight: 600;
}

.cbc-btn-ratio {
    font-size: 11px;
    opacity: .7;
}

.cbc-strength-desc {
    font-size: 12.5px;
    color: var(--cbc-text-muted);
    margin: 0;
    line-height: 1.5;
    font-style: italic;
    min-height: 38px;
}

/* ─── Unit Toggle ───────────────────────────────────────── */
.cbc-unit-toggle {
    display: flex;
    background: var(--cbc-surface2);
    border-radius: 10px;
    padding: 3px;
    gap: 3px;
}

.cbc-unit-btn {
    flex: 1;
    padding: 7px 10px;
    border: none;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    color: var(--cbc-text-muted);
    transition: all .15s ease;
}

.cbc-unit-btn.active {
    background: var(--cbc-brown);
    color: #fff;
    box-shadow: 0 1px 6px rgba(92,61,46,.25);
}

/* ─── Labels & Inputs ───────────────────────────────────── */
.cbc-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--cbc-text);
    margin-bottom: 7px;
}

.cbc-hint {
    font-size: 12px;
    color: var(--cbc-text-muted);
    font-weight: 400;
}

.cbc-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cbc-ratio-prefix {
    font-size: 15px;
    font-weight: 600;
    color: var(--cbc-brown);
    white-space: nowrap;
}

.cbc-input {
    flex: 1;
    padding: 10px 12px;
    border: 1.5px solid var(--cbc-border);
    border-radius: 10px;
    background: var(--cbc-surface);
    font-size: 15px;
    font-family: 'DM Sans', sans-serif;
    color: var(--cbc-text);
    transition: border-color .15s;
    outline: none;
}

.cbc-input:focus {
    border-color: var(--cbc-amber);
    box-shadow: 0 0 0 3px rgba(196,132,58,.12);
}

.cbc-input-large {
    font-size: 18px;
    font-weight: 600;
}

.cbc-select {
    padding: 10px 10px;
    border: 1.5px solid var(--cbc-border);
    border-radius: 10px;
    background: var(--cbc-surface);
    font-size: 13px;
    font-family: 'DM Sans', sans-serif;
    color: var(--cbc-text);
    cursor: pointer;
    outline: none;
    transition: border-color .15s;
}

.cbc-select:focus { border-color: var(--cbc-amber); }

/* ─── Radio Group ───────────────────────────────────────── */
.cbc-radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cbc-radio-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 13.5px;
    line-height: 1.4;
}

.cbc-radio { display: none; }

.cbc-radio-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--cbc-border);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 1px;
    transition: all .15s;
    position: relative;
}

.cbc-radio:checked + .cbc-radio-custom {
    border-color: var(--cbc-amber);
    background: var(--cbc-amber);
    box-shadow: inset 0 0 0 3px var(--cbc-cream);
}

/* ─── Results Panel ─────────────────────────────────────── */
.cbc-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.cbc-ratio-badge {
    background: var(--cbc-amber);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: .03em;
    font-family: 'Fraunces', serif;
}

.cbc-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.cbc-result-card {
    border-radius: 14px;
    padding: 16px 14px 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 4px;
}

.cbc-result-water {
    background: var(--cbc-water-lt);
    border: 1.5px solid rgba(74,144,184,.2);
}

.cbc-result-coffee {
    background: var(--cbc-coffee-lt);
    border: 1.5px solid rgba(92,61,46,.12);
}

.cbc-result-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 2px;
}

.cbc-result-water .cbc-result-icon svg { color: var(--cbc-water); width: 28px; height: 28px; }
.cbc-result-coffee .cbc-result-icon svg { color: var(--cbc-coffee); width: 28px; height: 28px; }

.cbc-result-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .07em;
    font-weight: 600;
    color: var(--cbc-text-muted);
}

.cbc-result-value {
    font-family: 'Fraunces', serif;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--cbc-text);
}

.cbc-result-water .cbc-result-value { color: var(--cbc-water); }
.cbc-result-coffee .cbc-result-value { color: var(--cbc-coffee); }

.cbc-result-alt {
    font-size: 12px;
    color: var(--cbc-text-muted);
    min-height: 16px;
}

/* ─── Steep Times ───────────────────────────────────────── */
.cbc-steep-section {
    margin-bottom: 16px;
}

.cbc-steep-title {
    font-family: 'Fraunces', serif;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--cbc-text-muted);
    margin: 0 0 8px;
}

.cbc-steep-options {
    display: flex;
    gap: 8px;
}

.cbc-steep-card {
    flex: 1;
    background: var(--cbc-surface);
    border: 1.5px solid var(--cbc-border);
    border-radius: 10px;
    padding: 10px 8px;
    text-align: center;
}

.cbc-steep-icon { font-size: 18px; margin-bottom: 2px; }

.cbc-steep-label {
    font-size: 11px;
    color: var(--cbc-text-muted);
    font-weight: 500;
}

.cbc-steep-time {
    font-size: 13px;
    font-weight: 700;
    color: var(--cbc-brown);
    font-family: 'Fraunces', serif;
}

/* ─── Tip Box ───────────────────────────────────────────── */
.cbc-tip-box {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    background: rgba(196,132,58,.1);
    border-left: 3px solid var(--cbc-amber);
    border-radius: 0 8px 8px 0;
    padding: 10px 12px;
    margin-bottom: 16px;
}

.cbc-tip-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

.cbc-tip-text {
    font-size: 12.5px;
    color: var(--cbc-brown-mid);
    margin: 0;
    line-height: 1.5;
}

/* ─── Reset Button ──────────────────────────────────────── */
.cbc-reset-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1.5px solid var(--cbc-border);
    border-radius: 8px;
    padding: 7px 14px;
    cursor: pointer;
    font-size: 12.5px;
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    color: var(--cbc-text-muted);
    transition: all .15s;
}

.cbc-reset-btn svg { width: 14px; height: 14px; }

.cbc-reset-btn:hover {
    border-color: var(--cbc-amber);
    color: var(--cbc-brown);
}

/* ─── Footer ────────────────────────────────────────────── */
.cbc-footer {
    background: var(--cbc-brown);
    padding: 12px 32px;
    text-align: center;
}

.cbc-footer p {
    margin: 0;
    font-size: 12px;
    color: rgba(255,255,255,.55);
}

.cbc-footer strong { color: rgba(255,255,255,.8); }

/* ─── Animations ────────────────────────────────────────── */
.cbc-result-value {
    transition: all .2s ease;
}

@keyframes cbc-pop {
    0% { transform: scale(.96); opacity: .6; }
    100% { transform: scale(1); opacity: 1; }
}

.cbc-result-value.cbc-updated {
    animation: cbc-pop .22s ease forwards;
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 640px) {
    .cbc-header { padding: 20px 20px 16px; }
    .cbc-panel { padding: 20px 16px; }
    .cbc-inputs-panel { border-right: none; border-bottom: 1px solid var(--cbc-border); }
    .cbc-strength-toggle { grid-template-columns: repeat(2, 1fr); }
    .cbc-result-value { font-size: 22px; }
}