/* Pustakita - gaya bersama.
   Warna dan ukuran dikumpulkan di :root supaya mudah diubah satu kali. */

:root {
    --putih: #ffffff;
    --latar-lembut: #f4f8fb;
    --biru: #4a8fc7;
    --biru-tua: #2f6b9a;
    --hijau: #6cbf9b;
    --teks: #1f2d3a;
    --teks-redup: #5d6e7e;
    --garis: #dbe5ee;
    --bayangan: 0 1px 6px rgba(47, 107, 154, 0.14);
    --bayangan-fokus: 0 2px 14px rgba(47, 107, 154, 0.22);
    --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--putih);
    color: var(--teks);
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

:focus-visible {
    outline: 3px solid var(--hijau);
    outline-offset: 2px;
    border-radius: 6px;
}

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

/* ---------- Header ---------- */

.header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--garis);
    background: var(--putih);
}

.merek {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--biru-tua);
}

.merek-ikon {
    width: 30px;
    height: 30px;
}

.merek-ikon rect {
    fill: var(--biru);
}

.merek-ikon path {
    fill: var(--putih);
}

.menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.menu a {
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--teks-redup);
    transition: background-color 0.15s, color 0.15s;
}

.menu a:hover {
    background: var(--latar-lembut);
    color: var(--biru-tua);
}

.menu a.aktif {
    background: var(--latar-lembut);
    color: var(--biru-tua);
    font-weight: 600;
}

.menu-tombol {
    display: none;
    width: 42px;
    height: 42px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--garis);
    border-radius: 12px;
    background: var(--putih);
    color: var(--teks);
    cursor: pointer;
}

.menu-tombol svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
}

/* ---------- Beranda ---------- */

.beranda {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem 7vh;
    text-align: center;
}

.beranda-nama {
    margin: 0 0 0.5rem;
    font-size: clamp(2.8rem, 9vw, 4.75rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--biru);
}

.beranda-ket {
    margin: 0 0 2rem;
    max-width: 34rem;
    color: var(--teks-redup);
    font-size: 1.05rem;
}

.cari {
    position: relative;
    width: 100%;
    max-width: 640px;
}

.cari input[type="search"] {
    width: 100%;
    height: 58px;
    padding: 0 3.5rem 0 1.5rem;
    border: 1px solid var(--garis);
    border-radius: 999px;
    background: var(--putih);
    color: var(--teks);
    font: inherit;
    font-size: 1.05rem;
    box-shadow: var(--bayangan);
    transition: box-shadow 0.15s, border-color 0.15s;
    -webkit-appearance: none;
    appearance: none;
}

.cari input[type="search"]::placeholder {
    color: #8b9aa8;
}

.cari input[type="search"]:hover {
    box-shadow: var(--bayangan-fokus);
}

.cari input[type="search"]:focus {
    outline: none;
    border-color: var(--biru);
    box-shadow: var(--bayangan-fokus);
}

.cari button {
    position: absolute;
    top: 50%;
    right: 0.6rem;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 50%;
    background: var(--biru);
    color: var(--putih);
    cursor: pointer;
    transition: background-color 0.15s;
}

.cari button:hover {
    background: var(--biru-tua);
}

.cari button svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
}

/* ---------- Footer ---------- */

.footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--garis);
    color: var(--teks-redup);
    font-size: 0.875rem;
    text-align: center;
}

.footer p {
    margin: 0;
}

/* ---------- Layar kecil ---------- */

@media (max-width: 760px) {
    .header {
        padding: 0.7rem 1rem;
    }

    .menu-tombol {
        display: inline-flex;
    }

    .menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 10;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0.5rem 1rem 0.9rem;
        background: var(--putih);
        border-bottom: 1px solid var(--garis);
        box-shadow: 0 8px 16px rgba(31, 45, 58, 0.06);
    }

    .menu.terbuka {
        display: flex;
    }

    .menu a {
        padding: 0.75rem 0.9rem;
        border-radius: 10px;
    }

    .cari input[type="search"] {
        height: 54px;
        font-size: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}

/* ---------- Halaman menu (ditambahkan Tahap 2) ---------- */

.halaman {
    flex: 1;
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 3rem;
}

.halaman-judul {
    margin: 0 0 0.4rem;
    font-size: clamp(1.8rem, 5vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--biru-tua);
}

.halaman-ket {
    margin: 0 0 2rem;
    max-width: 40rem;
    color: var(--teks-redup);
}

.halaman .cari {
    margin-bottom: 1.75rem;
}

.segera {
    padding: 2.5rem 1.5rem;
    border: 1px dashed var(--garis);
    border-radius: 16px;
    background: var(--latar-lembut);
    color: var(--teks-redup);
    text-align: center;
}

.segera strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--teks);
    font-size: 1.1rem;
}

.segera p {
    margin: 0;
}

.segera a {
    color: var(--biru-tua);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

@media (max-width: 760px) {
    .halaman {
        padding: 1.75rem 1rem 2.5rem;
    }
}