/* ═══════════════════════════════════════════════════
   GUMA — Shared Styles
   Linked first from every page. Page-specific styles
   stay in each file's own <style> block.
   ═══════════════════════════════════════════════════ */

:root {
    --ink:         #0A0A0A;
    --ink-2:       #555555;
    --ink-3:       #595959;
    --paper:       #FFFFFF;
    --paper-2:     #F6F6F6;
    --sage:        #1B6B54;
    --sage-light:  #EAF3EF;
    --border:          rgba(0,0,0,0.08);   /* hairline — cards, dividers */
    --border-control:  rgba(0,0,0,0.15);   /* interactive at rest — inputs, search, pills */
    --border-strong:   rgba(0,0,0,0.25);   /* control hover / focus */
    --r:           22px;
    --gap:         14px;
    --blur:        saturate(180%) blur(20px);

    /* ── Elevation — one light source, a single scale ── */
    --shadow-sm:   0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);   /* resting card */
    --shadow-md:   0 2px 8px rgba(0,0,0,0.06);                               /* floating control (search) */
    --shadow-lg:   0 4px 16px rgba(0,0,0,0.08);                              /* focus lift / modal */
    --shadow-xl:   0 12px 32px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04); /* hover / raised card */
    --hairline:    inset 0 0 0 1px var(--border);                            /* 1px inset border-as-shadow */
    --ring:        0 0 0 3px rgba(27,107,84,0.08);                           /* sage focus ring */
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Figtree', -apple-system, sans-serif;
    background: var(--paper);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

/* ── Visually hidden (screen reader only) ─────────── */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Skip Link ─────────────────────────────────────── */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 9999;
    background: var(--sage);
    color: #fff;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: top 0.1s;
}
.skip-link:focus { top: 16px; }

/* ── Focus Visible ─────────────────────────────────── */
:focus-visible {
    outline: 2px solid var(--sage);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ── Nav ───────────────────────────────────────────── */
nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.85);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-bottom: 1px solid var(--border);
    height: 56px;
    padding: 0 48px;
    display: flex; align-items: center; justify-content: space-between;
}

.logo {
    font-size: 16px; font-weight: 800;
    letter-spacing: 2px; text-transform: uppercase;
    color: var(--ink); text-decoration: none;
}

.nav-links { display: flex; align-items: center; gap: 0; }

.nav-link {
    padding: 6px 16px;
    font-size: 14px; font-weight: 500; color: var(--ink-2);
    text-decoration: none; transition: color 0.1s;
    letter-spacing: -0.1px;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); font-weight: 600; }

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

.nav-cta {
    padding: 8px 18px;
    background: var(--ink); color: var(--paper);
    border: none; border-radius: 100px;
    font-size: 13px; font-weight: 600; cursor: pointer;
    font-family: inherit; transition: opacity 0.12s;
    letter-spacing: -0.1px;
}
.nav-cta:hover { opacity: 0.8; }

.nav-ghost {
    padding: 8px 16px;
    background: transparent; color: var(--ink-2);
    border: none; border-radius: 100px;
    font-size: 13px; font-weight: 500; cursor: pointer;
    font-family: inherit; transition: color 0.1s, background 0.1s;
}
.nav-ghost:hover { color: var(--ink); background: var(--paper-2); }

.nav-back {
    font-size: 13px; font-weight: 500; color: var(--ink-2);
    text-decoration: none; display: flex; align-items: center; gap: 6px;
    transition: color 0.1s;
}
.nav-back:hover { color: var(--ink); }

/* ── Bottom Tab Bar (mobile only) ──────────────────── */
.tab-bar { display: none; }

/* ── Footer ────────────────────────────────────────── */
footer {
    border-top: 1px solid var(--border);
    padding: 56px 48px 32px;
}

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

.footer-grid {
    display: grid; grid-template-columns: 2fr 3fr;
    gap: 48px; margin-bottom: 48px;
}

.footer-cols-row {
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px;
}

.footer-brand .f-logo {
    font-size: 15px; font-weight: 800; letter-spacing: 2px;
    text-transform: uppercase; color: var(--ink); margin-bottom: 12px;
}

.footer-brand > p {
    font-size: 13px; color: var(--ink-3);
    line-height: 1.65; margin-bottom: 16px;
}

.footer-materia-link {
    font-size: 12px; font-weight: 600; color: var(--sage);
    text-decoration: none; letter-spacing: -0.1px;
    opacity: 0.8; transition: opacity 0.12s;
}
.footer-materia-link:hover { opacity: 1; }

.footer-col h5 {
    font-size: 11px; font-weight: 700;
    letter-spacing: 1px; text-transform: uppercase;
    color: var(--ink-3); margin-bottom: 16px;
}

.footer-col a {
    display: block; font-size: 13.5px;
    color: var(--ink-2); text-decoration: none;
    margin-bottom: 10px; transition: color 0.1s;
}
.footer-col a:hover { color: var(--ink); }

.footer-base {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    display: flex; justify-content: space-between;
    font-size: 12px; color: var(--ink-3);
}

/* ── Mobile ≤680px ─────────────────────────────────── */
@media (max-width: 680px) {

    nav {
        height: 40px;
        padding: 0 20px;
    }

    .nav-links,
    .nav-actions {
        display: none;
    }

    body { padding-bottom: calc(56px + env(safe-area-inset-bottom)); }

    .tab-bar {
        display: flex;
        position: fixed;
        bottom: 0; left: 0; right: 0;
        z-index: 200;
        height: 56px;
        padding-bottom: env(safe-area-inset-bottom);
        background: rgba(255,255,255,0.95);
        backdrop-filter: var(--blur);
        -webkit-backdrop-filter: var(--blur);
        border-top: 1px solid var(--border);
        align-items: stretch;
    }

    .tab-bar a {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        text-decoration: none;
        color: var(--ink-3);
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 0.3px;
        min-height: 44px;
        transition: color 0.15s;
    }

    .tab-bar a[aria-current="page"],
    .tab-bar a[aria-current="true"] { color: var(--sage); }

    .tab-bar svg {
        width: 20px; height: 20px;
        flex-shrink: 0;
    }

    footer {
        padding: 40px 20px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px; margin-bottom: 32px;
    }

    .footer-cols-row {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .footer-base { flex-direction: column; gap: 8px; }
}

@media (max-width: 390px) {
    .footer-cols-row { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Alternatives layer — "Ubat lain" clarity rows (name + class + plain-BM "what it does") */
.alt-section{margin:32px 0}
.alt-h2{font:700 22px/1.2 Figtree;margin:0 0 16px}
.alt-group-title{font:600 16px/1.3 Figtree;margin:0 0 4px}
.alt-group-sub{color:var(--ink-2);font-size:14px;margin:0 0 16px}
.alt-rows{display:flex;flex-direction:column;gap:var(--gap)}
.alt-row{display:block;padding:16px 18px;border-radius:16px;
  border:1px solid var(--border);text-decoration:none;color:var(--ink);
  transition:border-color .15s ease, box-shadow .15s ease}
.alt-row:hover{border-color:var(--border-strong);box-shadow:var(--shadow-sm)}
.alt-row-head{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px}
.alt-row-name{font:600 16px/1.3 Figtree;letter-spacing:-0.2px}
.alt-row-class{font-size:11px;font-weight:600;letter-spacing:0.4px;text-transform:uppercase;
  color:var(--sage);background:var(--sage-light);padding:3px 9px;border-radius:100px}
.alt-row-does{margin:6px 0 0;font-size:14px;line-height:1.55;color:var(--ink-2)}
.alt-row-meta{margin-top:8px;font-size:12px;color:var(--ink-3);display:flex;gap:6px;flex-wrap:wrap}
.alt-row-sched{font-weight:600}
/* Natural alternatives — "Alternatif semula jadi" (evidence + NPRA-registration rails) */
.alt-row-nat{cursor:default}
.alt-row-nat:hover{border-color:var(--border);box-shadow:none}
.nat-evidence,.nat-reg{font-size:11px;font-weight:600;letter-spacing:0.3px;padding:3px 9px;border-radius:100px;white-space:nowrap}
.nat-evidence{color:var(--ink-3);background:var(--paper-2)}
.nat-evidence.ev-established{color:var(--sage);background:var(--sage-light)}
.nat-reg.reg-ok{color:var(--sage);background:var(--sage-light)}
.nat-reg.reg-no{color:#B45309;background:#FEF3C7}
.nat-reg.reg-unknown{color:var(--ink-3);background:var(--paper-2)}
.nat-lead{font-weight:600;color:var(--ink-2)}
.nat-note{margin:14px 0 0;font-size:13px;line-height:1.6;color:var(--ink-3);padding:12px 14px;background:var(--paper-2);border-radius:12px}
/* Inline quick-compare (alt-expand) — progressive enhancement on "Ubat lain" rows */
.alt-row-wrap{display:flex;flex-direction:column}
.alt-row-x{position:relative;cursor:pointer;padding-right:38px}
.alt-row-x::after{content:"";position:absolute;top:21px;right:16px;width:7px;height:7px;
  border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .18s ease;opacity:.55}
.alt-row-x[aria-expanded="true"]::after{transform:rotate(-135deg)}
.alt-expand{margin:6px 0 2px;padding:16px 18px;border-radius:14px;background:var(--paper-2);animation:altExpandIn .18s ease}
@keyframes altExpandIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.alt-expand-table{width:100%;border-collapse:collapse;font-size:13.5px}
.alt-expand-table th,.alt-expand-table td{text-align:left;padding:8px 10px;vertical-align:top;border-bottom:1px solid var(--border)}
.alt-expand-table thead th{font:700 13px/1.2 Figtree;color:var(--ink)}
.alt-expand-table tbody th{color:var(--ink-3);font-weight:600;width:84px}
.alt-expand-table td{color:var(--ink-2)}
.alt-expand-link{display:inline-block;margin-top:12px;color:var(--sage);font-weight:600;font-size:13px;text-decoration:none}
/* Tap-to-expand on natural-alternative rows — real button head + reveal panel */
.alt-row-nat:has(.alt-row-nat-x){cursor:pointer}
.alt-row-nat-x{display:block;width:100%;text-align:left;background:none;border:0;padding:0 26px 0 0;margin:0;
  font:inherit;color:inherit;cursor:pointer;position:relative}
.alt-row-nat-x::after{content:"";position:absolute;top:5px;right:2px;width:7px;height:7px;
  border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .18s ease;opacity:.55}
.alt-row-nat-x[aria-expanded="true"]::after{transform:rotate(-135deg)}
.alt-row-nat-x:focus-visible{outline:2px solid var(--sage);outline-offset:3px;border-radius:6px}
.alt-expand-nat{margin:12px 0 2px;padding:16px 18px;border-radius:14px;background:var(--paper-2);animation:altExpandIn .18s ease}
.alt-expand-nat p{margin:0 0 10px;font-size:14px;line-height:1.55;color:var(--ink-2)}
.alt-expand-nat p:last-child{margin-bottom:0}
.alt-expand-nat .nat-x-differ{font-size:13px;color:var(--ink-3)}

/* /banding compare pages */
.cmp-wrap{max-width:760px;margin:0 auto;padding:48px 24px}
.cmp-h1{font:800 clamp(28px,5vw,44px)/1.1 Figtree;letter-spacing:-1.5px;margin:16px 0 12px}
.cmp-frame{color:var(--ink-2);font-size:16px;line-height:1.6;margin:0 0 28px}
.cmp-table{width:100%;border-collapse:collapse;margin:0 0 28px;font-size:14px}
.cmp-table th,.cmp-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:top}
.cmp-table thead th{font:700 15px/1.2 Figtree;border-bottom:2px solid var(--border-strong)}
.cmp-table tbody th{color:var(--ink-3);font-weight:600;width:120px}
.cmp-table td{color:var(--ink-2)}
.cmp-beza{background:var(--sage-light);border-radius:16px;padding:24px 26px;margin:0 0 28px}
.cmp-beza-title{font:700 16px/1.2 Figtree;margin:0 0 14px;color:var(--ink)}
.cmp-beza-line{margin:0 0 12px;color:var(--ink-2);font-size:15px;line-height:1.75;max-width:62ch}
.cmp-beza-line:last-child{margin-bottom:0}
.cmp-beza-line strong{color:var(--ink);font-weight:700}
.cmp-links{display:flex;flex-wrap:wrap;gap:16px;margin-top:24px}
.cmp-links a{color:var(--sage);text-decoration:none;font-weight:600;font-size:14px}
/* Soalan Lazim — breathable Q&A on the compare page */
.cmp-wrap .faq{margin:8px 0 28px}
.cmp-wrap .faq>h2{font:700 22px/1.2 Figtree;letter-spacing:-0.5px;margin:0 0 8px}
.cmp-wrap .faq-item{padding:22px 0;border-bottom:1px solid var(--border)}
.cmp-wrap .faq-item:last-child{border-bottom:none}
.cmp-wrap .faq-q{font:600 17px/1.45 Figtree;color:var(--ink);margin:0 0 12px}
.cmp-wrap .faq-a{font-size:15px;line-height:1.8;color:var(--ink-2);max-width:62ch;margin:0}