/* ================================
   SFL Buddy Calculators - Base
   Root vars, resets, nav, tabs, footer
   ================================ */

:root {
    --bg:      #f7f3eb;
    --card:    #fffdf8;
    --border:  #d6cbb8;
    --green:   #4a7c3f;
    --green-light: #5a9c4f;
    --brown:   #7a5c3a;
    --text:    #3d2e1e;
    --muted:   #9e8a72;
    --tag-bg:  #e8f0e4;
    --tag-txt: #3d6130;
    --accent:  #4a7c3f;
    --positive: #3d8b2f;
    --negative: #c44536;
    --warning:  #b8860b;
    --info:     #4a7090;
    --card-bg:  #fffdf8;
    --border-color: #d6cbb8;
    --text-primary: #3d2e1e;
    --text-secondary: #9e8a72;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background-image:
        linear-gradient(rgba(0,0,0,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.025) 1px, transparent 1px);
    background-size: 24px 24px;
}

.page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
}

/* ── Nav Bar ── */
.calc-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.nav-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--green);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
}
.nav-back:hover { color: #3a6330; }

.nav-back-arrow {
    line-height: 1;
}

.nav-back-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    image-rendering: auto;
    flex-shrink: 0;
}

.nav-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-coin-ratio {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: 0.75rem;
    color: var(--muted);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 3px 8px;
}
.nav-coin-icon {
    width: 14px;
    height: 14px;
}
.nav-coin-ratio input {
    width: 50px;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 0.75rem;
    font-family: monospace;
    outline: none;
    padding: 0;
}
.nav-coin-ratio input::-webkit-inner-spin-button { -webkit-appearance: none; }
.nav-tax-rate {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: 0.75rem;
    color: var(--muted);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 3px 8px;
}
.nav-tax-rate select {
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 0.75rem;
    font-family: monospace;
    outline: none;
    cursor: pointer;
}

.nav-btn {
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--card);
    color: var(--muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.nav-btn:hover {
    background: var(--tag-bg);
    color: var(--text);
    border-color: var(--green);
}

.price-status {
    font-size: 0.7rem;
    padding: 3px 8px;
    border-radius: 4px;
}
.price-status.loading { color: var(--muted); background: rgba(158,138,114,0.1); }
.price-status.success { color: var(--positive); background: rgba(61,139,47,0.1); }
.price-status.error   { color: var(--negative); background: rgba(196,69,54,0.1); }
.price-status a { color: inherit; text-decoration: underline; }
.price-status a:hover { opacity: 0.8; }

/* ── Calculator Tabs ── */
.calc-tabs-wrapper {
    position: relative;
    margin-bottom: 6px;
}

.calc-tabs-bar {
    display: flex;
    gap: 8px;
    padding: 6px 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.calc-tabs-bar::-webkit-scrollbar { display: none; }

/* Fade gradients */
.calc-tabs-wrapper::before,
.calc-tabs-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 32px;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}
.calc-tabs-wrapper::before {
    left: 0;
    background: linear-gradient(to right, var(--bg), transparent);
}
.calc-tabs-wrapper::after {
    right: 0;
    background: linear-gradient(to left, var(--bg), transparent);
}
.calc-tabs-wrapper.can-scroll-left::before { opacity: 1; }
.calc-tabs-wrapper.can-scroll-right::after { opacity: 1; }

/* Arrow buttons */
.calc-tabs-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    width: 24px;
    height: 24px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--card);
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.calc-tabs-arrow:hover {
    background: var(--tag-bg);
    color: var(--text);
}
.calc-tabs-arrow-left { left: 2px; }
.calc-tabs-arrow-right { right: 2px; }
.calc-tabs-wrapper.can-scroll-left .calc-tabs-arrow-left { display: flex; }
.calc-tabs-wrapper.can-scroll-right .calc-tabs-arrow-right { display: flex; }

.calc-sub-tab {
    padding: 8px 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    color: var(--muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
    font-weight: 500;
    flex-shrink: 0;
    white-space: nowrap;
}
.calc-sub-tab:hover {
    background: var(--tag-bg);
    color: var(--text);
}
.calc-sub-tab.active {
    background: var(--green);
    color: #fff;
    border-color: var(--green);
    font-weight: 600;
}

/* CSS-driven tab switching — set by theme-init.js before first paint to prevent CLS */
html[data-active-tab] .calc-sub-content.active { display: none; }
html[data-active-tab] .calc-sub-tab.active {
    background: var(--card);
    color: var(--muted);
    border-color: var(--border);
    font-weight: 500;
}
html[data-active-tab="animals"] #animalsContent,
html[data-active-tab="fruits"] #fruitsContent,
html[data-active-tab="crops"] #cropsContent,
html[data-active-tab="resources"] #resourcesContent,
html[data-active-tab="marvels"] #marvelsContent,
html[data-active-tab="xp"] #xpContent { display: block; }

html[data-active-tab="animals"] .calc-sub-tab[data-tab="animals"],
html[data-active-tab="fruits"] .calc-sub-tab[data-tab="fruits"],
html[data-active-tab="crops"] .calc-sub-tab[data-tab="crops"],
html[data-active-tab="resources"] .calc-sub-tab[data-tab="resources"],
html[data-active-tab="marvels"] .calc-sub-tab[data-tab="marvels"],
html[data-active-tab="xp"] .calc-sub-tab[data-tab="xp"] {
    background: var(--green);
    color: #fff;
    border-color: var(--green);
    font-weight: 600;
}

.calc-sub-content { display: none; }
.calc-sub-content.active { display: block; }

/* ── Boost Warning Text ── */
.boost-warning-text {
    font-size: 0.6rem;
    color: var(--warning);
    font-style: italic;
    margin-top: 2px;
}

/* ── Support Link (nav bar) ── */
.nav-support {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #b5446e;
    text-decoration: none;
    background: #fce4ec;
    padding: 0.3rem 0.65rem;
    border-radius: 6px;
    margin-right: auto;
}
.nav-support:hover { color: #fff; background: #e91e63; }

.nav-support-icon {
    width: 18px;
    height: 18px;
    object-fit: contain;
    image-rendering: pixelated;
    flex-shrink: 0;
}

.nav-support-copy {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.nav-support-title {
    font-size: 0.64rem;
    font-weight: 700;
}

.nav-support-subtitle {
    font-size: 0.72rem;
}

/* ── Footer ── */
.calc-footer {
    margin-top: 2.5rem;
    text-align: center;
    font-size: 0.72rem;
    color: var(--muted);
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}
.calc-footer a {
    color: var(--muted);
    text-decoration: underline;
}
.calc-footer a:hover { color: var(--text); }
.calc-footer p + p { margin-top: 0.3rem; }

/* ── Responsive ── */
@media (max-width: 1200px) {
    .page { padding: 0 1rem 2rem; }
}

@media (max-width: 600px) {
    .page { padding: 0 0.75rem 1.5rem; }
    .calc-nav { gap: 8px; }
    .nav-title { font-size: 1rem; }
    .coin-settings-row { flex-direction: column; gap: 8px; }
}