/* ============================================================================
   Landing Page Tamu
   Katalog praktikum dengan kerangka: topbar pencarian, baris filter, hero
   tengah, dan grid kartu besar. Bahasa visual memakai token TypeCode yang
   sudah ada: garis drafting, aksen merek, mono untuk label, serif untuk satu
   frasa judul. Tidak ada gambar atau data karangan.
   ========================================================================== */

/* Pencarian topbar. Hanya tampil saat tamu berada di landing. */
.landing-search {
    position: relative;
    display: flex;
    align-items: center;
    min-width: 0;
}

/* Header landing clean: brand di kiri, seluruh button navigasi & aksi di kanan */
body.landing-mode .top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0;
}

body.landing-mode .top-nav .nav-brand {
    flex: 0 0 auto;
    margin-right: auto;
}

body.landing-mode .top-nav .nav-tabs {
    justify-self: unset;
    margin-left: auto;
}

body.landing-mode .top-nav .nav-actions {
    justify-self: unset;
    margin-left: 0;
    flex: 0 0 auto;
}

/* Suara keyboard tidak dicantumkan di landing page */
body.landing-mode #sound-btn-wrap {
    display: none !important;
}

.landing-search i {
    position: absolute;
    left: 12px;
    color: var(--text-secondary);
    font-size: 12px;
    pointer-events: none;
}

.landing-search input {
    width: 100%;
    /* Sistem input pencarian aplikasi memakai tinggi 40px, garis putus-putus,
       radius 10px, dan bayangan halus. Di landing tinggi dinaikkan ke 44px
       agar sasaran sentuh tetap lega; padding kiri wajib menang atas aturan
       global `input[type="search"]` supaya ikon tidak menimpa placeholder. */
    height: 44px !important;
    padding: 0 12px 0 32px !important;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 13px;
    line-height: normal;
}

.landing-search input::placeholder {
    color: var(--text-secondary);
    font-size: 13px;
    opacity: 1;
}

.landing-search input:focus {
    outline: 2px solid var(--brand-indigo);
    outline-offset: 2px;
    border-color: var(--brand-indigo);
}

/* Aturan global input memakai `outline: none !important`; kolom cari landing
   harus tetap punya penanda fokus papan ketik yang jelas. */
.landing-search input:focus-visible {
    outline: 2px solid var(--brand-indigo) !important;
    outline-offset: 2px !important;
}

.landing-page {
    position: relative;
    z-index: 2;
    width: 100%;
    flex: 1 0 auto;
    border: none !important;
    box-shadow: none !important;
}

/* Hilangkan garis kotak/bingkai pembatas di landing page */
body.landing-mode #welcome-view,
#welcome-view:has(#landing-page) {
    border: none !important;
    box-shadow: none !important;
    padding-inline: 0 !important;
}

.landing-page.is-empty {
    min-height: 0;
}

/* ---------- HERO ---------- */
.landing-hero {
    max-width: 1280px;
    margin: 0 auto;
    padding: clamp(42px, 8vh, 96px) clamp(8px, 2vw, 24px)
        clamp(26px, 4vh, 44px);
    text-align: center;
}

.landing-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 clamp(16px, 2.4vh, 24px);
    font-family: var(--font-code);
    font-size: clamp(10px, 0.22vw + 7.2px, 12px);
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.landing-kicker::before {
    display: none !important;
}

.landing-hero-title {
    margin: 0;
    font-size: clamp(42px, min(7vw, 8.6vh), 86px);
    font-weight: 700;
    line-height: 1.02;
    letter-spacing: -0.035em;
    color: var(--text-primary);
    text-wrap: balance;
}

.landing-hero-title em {
    font-family: var(--bd-serif, "Instrument Serif", Georgia, serif);
    font-style: italic;
    font-weight: 400;
    letter-spacing: -0.015em;
    color: var(--brand-indigo);
}

.landing-hero-lead {
    max-width: 58ch;
    margin: clamp(18px, 2.6vh, 24px) auto 0;
    font-size: clamp(14px, 1.05vw, 17px);
    line-height: 1.75;
    color: var(--text-secondary);
}

.landing-hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px 20px;
    margin-top: clamp(22px, 3vh, 30px);
}

/* Tombol utama. Sistem tombol global memakai lapisan ::before/::after;
   lapisan itu dimatikan agar warna dan bentuk landing ditentukan di sini. */
#landing-page .landing-primary-btn {
    width: auto !important;
    min-width: 0 !important;
    height: 48px !important;
    padding: 0 22px !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    border: 1px solid var(--btn-bg) !important;
    border-radius: var(--radius-md) !important;
    background: var(--btn-bg) !important;
    color: var(--btn-color) !important;
    box-shadow: none !important;
    font-family: var(--font-ui);
    font-size: 14px !important;
    font-weight: 600 !important;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease;
}

#landing-page .landing-primary-btn::before,
#landing-page .landing-primary-btn::after {
    display: none !important;
}

#landing-page .landing-primary-btn:hover {
    background: var(--btn-bg-hover) !important;
    border-color: var(--btn-bg-hover) !important;
    color: var(--btn-color) !important;
}

/* Di landing tamu, nav cukup Beranda, Praktikum, dan About. Menu Teori
   kembali tersedia setelah pengguna masuk. */
body.landing-mode #tab-teori-wrap {
    display: none !important;
}

.landing-text-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 4px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: var(--border-strong);
    text-underline-offset: 5px;
    transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

.landing-text-link:hover {
    color: var(--brand-indigo);
    text-decoration-color: var(--brand-indigo);
}

/* ---------- BARIS FILTER ---------- */
.landing-filterbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg-base);
    border-bottom: none !important;
}

.landing-filterbar-inner {
    max-width: 1280px;
    min-height: 52px;
    margin: 0 auto;
    padding: 4px clamp(8px, 2vw, 24px);
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

/* Filter berupa deret teks dengan jarak bersih tanpa garis pemisah */
.landing-filters {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
}

#landing-page .landing-filter {
    width: auto !important;
    min-width: 0 !important;
    height: 44px !important;
    padding: 0 4px !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border: 0 !important;
    border-left: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    color: var(--text-secondary) !important;
    font-family: var(--font-ui);
    font-size: 13px !important;
    font-weight: 500 !important;
    line-height: 1;
    white-space: nowrap;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.18s ease;
}

#landing-page .landing-filter:first-child {
    padding-left: 0 !important;
    border-left: 0 !important;
}

#landing-page .landing-filter:last-child {
    padding-right: 0 !important;
}

#landing-page .landing-filter::before,
#landing-page .landing-filter::after {
    display: none !important;
}

#landing-page .landing-filter:hover {
    background: transparent !important;
    color: var(--text-primary) !important;
}

#landing-page .landing-filter.is-active {
    background: transparent !important;
    color: var(--brand-indigo) !important;
    font-weight: 600 !important;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 6px;
}

.landing-filter-count {
    font-family: var(--font-code);
    font-size: 11px;
    font-weight: 500;
    color: inherit;
}

/* ---------- EXPLORE ---------- */
.landing-explore {
    max-width: 1280px;
    margin: 0 auto;
    scroll-margin-top: 80px;
    padding: clamp(32px, 5vh, 54px) clamp(8px, 2vw, 24px)
        clamp(26px, 4vh, 42px);
}

.landing-explore-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px 24px;
    padding-bottom: 16px;
    border-bottom: none !important;
}

.landing-eyebrow {
    margin: 0 0 8px;
    font-family: var(--font-code);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.landing-explore-head h2 {
    font-size: clamp(26px, 3vw, 40px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.025em;
}

.landing-result {
    margin: 0;
    flex: none;
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--text-secondary);
}

.landing-search-mobile {
    display: none;
    width: 100%;
    max-width: 440px;
    margin-top: 16px;
}

.landing-search-mobile input {
    height: 44px !important;
    padding-left: 34px !important;
}

.landing-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.landing-card {
    position: relative;
    min-width: 0;
    min-height: 272px;
    padding: 22px 22px 20px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: border-color 0.18s ease, background-color 0.18s ease;
}

/* Kartu unggulan memakai dua kolom grid dan judul lebih besar. Hierarki ini
   mengikuti isi: entri pertama adalah praktikum inti aplikasi. */
.landing-card-featured {
    grid-column: span 2;
    min-height: 320px;
    border-top: 3px solid var(--brand-indigo);
    padding-top: 20px;
}

.landing-card:not(.is-soon):hover {
    border-color: var(--brand-indigo);
    background: color-mix(in srgb, var(--brand-indigo) 4%, var(--bg-surface));
}

.landing-card.is-soon {
    border-style: dashed;
}

.landing-card.is-hidden {
    display: none;
}

.landing-card-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}

.landing-card-index {
    font-family: var(--font-code);
    font-size: 34px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--brand-indigo);
}

.landing-card.is-soon .landing-card-index {
    color: var(--text-tertiary);
}

.landing-card-kind {
    font-family: var(--font-code);
    font-size: 10.5px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.landing-card-main {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.landing-card-title {
    margin: 0;
    font-size: clamp(22px, 2vw, 30px);
    font-weight: 700;
    line-height: 1.14;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    overflow-wrap: break-word;
    text-wrap: balance;
}

.landing-card-featured .landing-card-title {
    max-width: 18ch;
    font-size: clamp(32px, 3.8vw, 54px);
    line-height: 1.04;
}

.landing-card-category {
    margin: 10px 0 0;
    font-family: var(--font-code);
    font-size: 11.5px;
    line-height: 1.5;
    color: var(--text-secondary);
}

.landing-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 15px;
    border-top: 1px solid var(--border-subtle);
}

.landing-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-code);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
}

.landing-status.is-available {
    color: var(--accent-emerald);
}

.landing-status.is-soon {
    color: var(--text-secondary);
}

.landing-status-dot {
    width: 6px;
    height: 6px;
    flex: none;
    border-radius: 50%;
    background: currentColor;
}

.landing-status.is-soon .landing-status-dot {
    background: transparent;
    border: 1px solid currentColor;
}

.landing-card-note {
    font-family: var(--font-code);
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}

#landing-page .landing-card-btn {
    width: auto !important;
    min-width: 0 !important;
    height: 44px !important;
    padding: 0 14px !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--border-strong) !important;
    border-radius: var(--radius-md) !important;
    background: transparent !important;
    box-shadow: none !important;
    color: var(--text-primary) !important;
    font-family: var(--font-ui);
    font-size: 13px !important;
    font-weight: 600 !important;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease,
        color 0.18s ease;
}

#landing-page .landing-card-btn::before,
#landing-page .landing-card-btn::after {
    display: none !important;
}

#landing-page .landing-card-btn:hover {
    border-color: var(--brand-indigo) !important;
    background: var(--brand-indigo-glow) !important;
    color: var(--brand-indigo) !important;
}

/* ---------- KEADAAN KOSONG ---------- */
.landing-empty {
    margin-top: 22px;
    padding: clamp(26px, 4vw, 44px);
    text-align: center;
    background: var(--bg-surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
}

.landing-empty h3 {
    font-size: clamp(20px, 2.2vw, 28px);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.landing-empty p:not(.landing-eyebrow) {
    max-width: 44ch;
    margin: 10px auto 0;
    color: var(--text-secondary);
}

#landing-page .landing-secondary-btn {
    width: auto !important;
    min-width: 0 !important;
    height: 44px !important;
    margin-top: 18px;
    padding: 0 18px !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-strong) !important;
    border-radius: var(--radius-md) !important;
    background: transparent !important;
    box-shadow: none !important;
    color: var(--text-primary) !important;
    font-family: var(--font-ui);
    font-size: 13px !important;
    font-weight: 600 !important;
    line-height: 1;
    cursor: pointer;
}

#landing-page .landing-secondary-btn::before,
#landing-page .landing-secondary-btn::after {
    display: none !important;
}

#landing-page .landing-secondary-btn:hover {
    border-color: var(--brand-indigo) !important;
    background: var(--brand-indigo-glow) !important;
    color: var(--brand-indigo) !important;
}

.landing-note {
    display: none !important;
}

.landing-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;
}

/* ---------- RESPONSIF ---------- */
@media (max-width: 1099px) {
    .landing-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .landing-card-featured {
        grid-column: span 2;
    }
}

@media (max-width: 900px) {
    .landing-search-mobile {
        display: flex;
    }

    .landing-hero {
        padding-top: clamp(34px, 6vh, 62px);
    }

    .landing-card-featured .landing-card-title {
        font-size: clamp(30px, 5.4vw, 44px);
    }
}

@media (max-width: 820px) {
    .landing-grid {
        grid-template-columns: 1fr;
    }

    .landing-card-featured {
        grid-column: span 1;
        min-height: 280px;
    }

    .landing-filterbar-inner {
        justify-content: flex-end;
    }

    .landing-filters {
        flex: none;
    }

    .landing-explore-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .landing-result {
        order: 2;
    }
}

@media (max-width: 560px) {
    .landing-hero-title {
        font-size: clamp(38px, 12vw, 52px);
    }

    .landing-hero-actions {
        flex-direction: column;
        gap: 8px;
    }

    #landing-page .landing-primary-btn {
        width: 100% !important;
    }

    .landing-text-link {
        min-height: 44px;
    }

    .landing-card {
        min-height: 240px;
        padding: 18px 18px 16px;
    }

    .landing-card-featured {
        min-height: 260px;
    }

    .landing-card-foot {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    #landing-page .landing-card-btn {
        width: 100% !important;
    }

    .landing-filterbar-inner {
        padding-left: 12px;
        padding-right: 12px;
    }

    #landing-page .landing-filter {
        padding: 0 12px !important;
    }

    .landing-explore {
        padding-top: 28px;
    }
}

@media (max-width: 360px) {
    #landing-page .landing-filter {
        padding: 0 9px !important;
        font-size: 12px !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    #landing-page .landing-primary-btn,
    #landing-page .landing-card-btn,
    #landing-page .landing-filter,
    .landing-text-link,
    .landing-card {
        transition: none;
    }
}