*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    height: 100%;
}
body {
    font-family: var(--m3-font-plain);
    background: var(--m3-surface);
    color: var(--m3-on-surface);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.doc-page {
    max-width: 960px;
    margin: 0 auto;
    padding: 48px 32px 96px;
}

/* TOP BAR */
.doc-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 48px;
}
.doc-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px 8px 12px;
    border-radius: var(--m3-radius-full, 9999px);
    background: transparent;
    color: var(--m3-on-surface-variant);
    border: 1px solid var(--m3-outline-variant);
    font-family: var(--m3-font-plain);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition:
        background 0.15s,
        color 0.15s,
        border-color 0.15s;
}
.doc-back:hover {
    background: var(--m3-surface-container);
    color: var(--m3-primary);
    border-color: var(--m3-primary);
}
.doc-back .material-icons-round {
    font-size: 18px;
}

/* HEADER */
.doc-header {
    margin-bottom: 56px;
}
.doc-eyebrow {
    font-family: var(--m3-font-plain);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--m3-primary);
    margin-bottom: 12px;
}
.doc-title {
    font-family: var(--m3-font-brand);
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--m3-on-surface);
    margin-bottom: 12px;
}
.doc-subtitle {
    font-family: var(--m3-font-plain);
    font-size: 15px;
    line-height: 1.6;
    color: var(--m3-on-surface-variant);
    max-width: 560px;
}

/* SECTION */
.doc-section {
    margin-bottom: 40px;
}
.doc-section-title {
    font-family: var(--m3-font-brand);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--m3-on-surface-variant);
    padding-bottom: 12px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--m3-outline-variant);
}

/* ============================================================
   CATEGORY LIST (index dokumen)
   ============================================================ */
.cat-list {
    display: flex;
    flex-direction: column;
}
.cat-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 2px;
    border-bottom: 1px solid var(--m3-outline-variant);
    text-decoration: none;
    color: inherit;
}
.cat-item:last-child {
    border-bottom: none;
}
.cat-item > .material-icons-round {
    font-size: 22px;
    color: var(--m3-primary);
    flex-shrink: 0;
}
.cat-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.cat-name {
    display: block;
    font-family: var(--m3-font-brand);
    font-weight: 600;
    font-size: 16px;
    color: var(--m3-on-surface);
    transition: color 0.15s;
}
.cat-item:hover .cat-name {
    color: var(--m3-primary);
}
.cat-desc {
    display: block;
    font-family: var(--m3-font-plain);
    font-size: 13px;
    line-height: 1.5;
    color: var(--m3-on-surface-variant);
}
.cat-arrow {
    flex-shrink: 0;
    color: var(--m3-outline);
    transition:
        color 0.15s,
        transform 0.15s;
}
.cat-item:hover .cat-arrow {
    color: var(--m3-primary);
    transform: translateX(4px);
}

/* ============================================================
   FOOTER
   ============================================================ */
.doc-footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--m3-outline-variant);
    font-family: var(--m3-font-plain);
    font-size: 12px;
    color: var(--m3-on-surface-variant);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.doc-footer a {
    color: var(--m3-primary);
    text-decoration: none;
}
.doc-footer a:hover {
    text-decoration: underline;
}

/* ============================================================
   MOBILE
   ============================================================ */
@media (max-width: 640px) {
    .doc-page {
        padding: 32px 20px 64px;
    }
    .doc-title {
        font-size: 30px;
    }
    .doc-subtitle {
        font-size: 14px;
    }
    .doc-header {
        margin-bottom: 40px;
    }
    .cat-item {
        gap: 12px;
        padding: 14px 2px;
    }
    .cat-name {
        font-size: 15px;
    }
    .cat-desc {
        font-size: 12px;
    }
    .doc-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}

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

.cat-list {
    display: flex;
    flex-direction: column;
}
.cat-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 2px;
    border-bottom: 1px solid var(--m3-outline-variant);
    text-decoration: none;
    color: inherit;
}
.cat-item:last-child {
    border-bottom: none;
}
.cat-item > .material-icons-round {
    font-size: 22px;
    color: var(--m3-primary);
    flex-shrink: 0;
}
.cat-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.cat-name {
    display: block;
    font-family: var(--m3-font-brand);
    font-weight: 600;
    font-size: 16px;
    color: var(--m3-on-surface);
    transition: color 0.15s;
}
.cat-item:hover .cat-name {
    color: var(--m3-primary);
}
.cat-desc {
    display: block;
    font-size: 13px;
    line-height: 1.5;
    color: var(--m3-on-surface-variant);
}
.cat-arrow {
    flex-shrink: 0;
    color: var(--m3-outline);
    transition:
        color 0.15s,
        transform 0.15s;
}
.cat-item:hover .cat-arrow {
    color: var(--m3-primary);
    transform: translateX(4px);
}