:root {
    --c-bg: #faf9f7;
    --c-sidebar: #ffffff;
    --c-surface: #ffffff;
    --c-text: #1a1a1a;
    --c-text-2: #555;
    --c-text-3: #888;
    --c-border: #e2e0dc;
    --c-accent: #2d5be3;
    --c-accent-subtle: #eef2fc;
    --c-focus: #2d5be3;
    --ff-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --ff-serif: 'Newsreader', Georgia, serif;
    --radius: 6px;
    --transition: 0.2s ease;
    --sidebar-w: 320px;
}

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

.skip-link {
    position: absolute; top: -100%; left: 1rem;
    background: var(--c-accent); color: #fff;
    padding: 0.4rem 0.8rem; border-radius: var(--radius);
    font-family: var(--ff-sans); font-size: 0.875rem;
    z-index: 200; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--ff-sans); font-size: 0.95rem;
    line-height: 1.6; color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

/* ====== TWO-COLUMN LAYOUT ====== */
.layout {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    min-height: 100vh;
}

/* ====== SIDEBAR ====== */
.sidebar {
    position: sticky; top: 0; height: 100vh;
    overflow-y: auto;
    background: var(--c-sidebar);
    border-right: 1px solid var(--c-border);
    padding: 2.5rem 1.75rem;
    display: flex; flex-direction: column;
    gap: 2rem;
}

.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }

.profile { opacity: 0; }

.profile__name {
    font-family: var(--ff-serif);
    font-size: 1.6rem; font-weight: 600;
    line-height: 1.2; letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.profile__role {
    font-size: 0.85rem; color: var(--c-text-2);
    margin-bottom: 1rem;
}

.profile__contact {
    list-style: none;
    display: flex; flex-direction: column; gap: 0.4rem;
}

.profile__contact a {
    color: var(--c-text-2); text-decoration: none;
    font-size: 0.825rem;
    border-bottom: 1px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}
.profile__contact a:hover { color: var(--c-accent); border-bottom-color: var(--c-accent); }

a,
a:visited,
a:hover,
a:active,
a:focus {
    text-decoration: none;
}

/* Sidebar nav */
.sidebar-nav { opacity: 0; }
.sidebar-nav ul { list-style: none; display: flex; flex-direction: column; gap: 0.15rem; }
.sidebar-nav a {
    display: block; padding: 0.45rem 0.75rem;
    font-size: 0.85rem; font-weight: 500;
    color: var(--c-text-2); text-decoration: none;
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
}
.sidebar-nav a:hover, .sidebar-nav a.active {
    background: var(--c-accent-subtle); color: var(--c-accent);
}

/* Sidebar skills compact */
.sidebar-skills { opacity: 0; }

.sidebar-skills__title {
    font-size: 0.7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--c-text-3); margin-bottom: 0.5rem;
}

.sidebar-skills__group + .sidebar-skills__group { margin-top: 0.75rem; }

.sidebar-skills__label {
    font-size: 0.75rem; font-weight: 600;
    color: var(--c-text-2); margin-bottom: 0.35rem;
}

.tag-list {
    display: flex; flex-wrap: wrap; gap: 4px; list-style: none;
}
.tag-list li {
    font-size: 0.75rem; padding: 2px 8px;
    background: var(--c-accent-subtle); color: var(--c-accent);
    border-radius: 3px; font-weight: 500;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}
.tag-list li:hover {
    background: var(--c-accent); color: #fff; transform: scale(1.06);
}

/* Sidebar education */
.sidebar-edu { opacity: 0; }

.sidebar-edu__title {
    font-size: 0.7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--c-text-3); margin-bottom: 0.5rem;
}
.sidebar-edu__degree { font-weight: 600; font-size: 0.85rem; }
.sidebar-edu__school { font-size: 0.8rem; color: var(--c-text-2); }
.sidebar-edu__year { font-size: 0.75rem; color: var(--c-text-3); }

.sidebar-footer {
    margin-top: auto;
    font-size: 0.7rem; color: var(--c-text-3);
    opacity: 0;
}

/* ====== MAIN CONTENT ====== */
.main {
    padding: 2.5rem 3rem;
}

/* Tabs for About / Proyek */
.tabs { margin-bottom: 1.5rem; opacity: 0; }

.tab-list {
    display: flex; gap: 0;
    border-bottom: 1px solid var(--c-border);
    list-style: none;
}

.tab-btn {
    background: none; border: none; cursor: pointer;
    font-family: var(--ff-sans); font-size: 0.9rem; font-weight: 500;
    color: var(--c-text-3); padding: 0.6rem 1.25rem;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}
.tab-btn:hover { color: var(--c-text); }
.tab-btn[aria-selected="true"] {
    color: var(--c-accent); border-bottom-color: var(--c-accent);
}

.tab-panel { display: none; }
.tab-panel[aria-hidden="false"] { display: block; }

/* ——— About Panel ——— */
.about-text {
    color: var(--c-text-2); line-height: 1.75;
    max-width: 56ch; margin-bottom: 1.5rem;
}

.stats {
    display: flex; gap: 2rem; flex-wrap: wrap;
}

.stat__number {
    font-family: var(--ff-serif);
    font-size: 1.75rem; font-weight: 600;
    color: var(--c-accent); line-height: 1;
}
.stat__label { font-size: 0.75rem; color: var(--c-text-3); margin-top: 2px; }

/* ——— Projects Panel ——— */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-bottom: 1.25rem;
}

.filter-btn {
    background: none; border: 1px solid var(--c-border);
    font-family: var(--ff-sans); font-size: 0.78rem; font-weight: 500;
    color: var(--c-text-3); padding: 4px 12px;
    border-radius: 20px; cursor: pointer;
    transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--c-accent); color: var(--c-accent); }
.filter-btn.active {
    background: var(--c-accent); color: #fff; border-color: var(--c-accent);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.card {
    position: relative;
    padding: 1.25rem;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    transition: box-shadow var(--transition), transform var(--transition);
    cursor: default;
    text-decoration: none;
    color: inherit;
}
a.card,
a.card * {
    text-decoration: none !important;
    text-decoration-line: none !important;
    -webkit-text-decoration-line: none !important;
    border-bottom: 0 !important;
    box-shadow: none !important;
}
.card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    transform: translateY(-2px);
}

.card--has-media {
    padding-bottom: 2.8rem;
}

.card__media-badge {
    position: absolute;
    right: 0.9rem;
    bottom: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    border: 1px solid rgba(45, 91, 227, 0.16);
    background: linear-gradient(135deg, rgba(45, 91, 227, 0.15), rgba(45, 91, 227, 0.05));
    color: var(--c-accent);
    box-shadow: 0 8px 18px rgba(45, 91, 227, 0.14);
    pointer-events: none;
}

.card__media-badge::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255,255,255,0.35);
}

.card__head {
    display: flex; justify-content: space-between;
    align-items: flex-start; gap: 0.75rem;
    margin-bottom: 0.35rem;
}
.card__name {
    font-weight: 600;
    font-size: 0.9rem;
    line-height: 1.25;
}

.card__media-icon {
    width: 0.95rem;
    height: 0.95rem;
    fill: currentColor;
    flex: 0 0 auto;
}

.card__year {
    font-size: 0.72rem; color: var(--c-text-3); white-space: nowrap;
}

.card__client {
    font-size: 0.75rem; font-style: italic;
    color: var(--c-accent); margin-bottom: 0.35rem;
    font-family: var(--ff-serif);
}

.card__desc {
    font-size: 0.825rem; color: var(--c-text-2); line-height: 1.55;
}

.card__tags {
    display: flex; flex-wrap: wrap; gap: 4px;
    margin-top: 0.6rem; list-style: none;
}
.card__tags li {
    font-size: 0.68rem; padding: 2px 7px;
    background: var(--c-bg); border-radius: 3px;
    color: var(--c-text-3); font-weight: 500;
}

/* Hidden card for filter */
.card--hidden {
    display: none;
}

/* ====== Lang Switcher ====== */
.lang-switcher {
    display: flex; gap: 6px;
    margin-bottom: 1rem;
}

.lang-btn {
    background: none; border: 1px solid var(--c-border);
    font-family: var(--ff-sans); font-size: 0.78rem; font-weight: 500;
    color: var(--c-text-3); padding: 4px 12px;
    border-radius: 20px; cursor: pointer;
    transition: all var(--transition);
}
.lang-btn:hover { border-color: var(--c-accent); color: var(--c-accent); }
.lang-btn.active {
    background: var(--c-accent); color: #fff; border-color: var(--c-accent);
}

/* ====== MOBILE ====== */
.mobile-header {
    display: none;
    padding: 1.25rem;
    background: var(--c-sidebar);
    border-bottom: 1px solid var(--c-border);
}

.mobile-header__name {
    font-family: var(--ff-serif);
    font-size: 1.3rem; font-weight: 600;
}

.mobile-header__role {
    font-size: 0.8rem; color: var(--c-text-2);
}

.hamburger {
    display: none; position: fixed;
    bottom: 1.25rem; right: 1.25rem;
    width: 48px; height: 48px;
    background: var(--c-accent); color: #fff;
    border: none; border-radius: 50%;
    font-size: 1.25rem; cursor: pointer;
    box-shadow: 0 4px 14px rgba(45,91,227,0.35);
    z-index: 100;
    transition: transform var(--transition);
}
.hamburger:hover { transform: scale(1.08); }

.overlay {
    display: none; position: fixed;
    inset: 0; background: rgba(0,0,0,0.3);
    z-index: 49;
}

@media (max-width: 820px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar {
        position: fixed; left: -100%; top: 0;
        width: 300px; z-index: 50;
        transition: left 0.35s cubic-bezier(0.4,0,0.2,1);
        box-shadow: 4px 0 20px rgba(0,0,0,0.1);
    }
    .sidebar.open { left: 0; }
    .overlay.open { display: block; }
    .mobile-header { display: flex; justify-content: space-between; align-items: center; }
    .hamburger { display: flex; align-items: center; justify-content: center; }
    .main { padding: 1.5rem; }
    .project-grid { grid-template-columns: 1fr; }
}

/* ====== Reduced motion ====== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .profile, .sidebar-nav, .sidebar-skills,
    .sidebar-edu, .sidebar-footer, .tabs,
    .card { opacity: 1 !important; transform: none !important; }
}

@media print {
    .layout { display: block; }
    .sidebar { position: static; height: auto; border: none; }
    .hamburger, .overlay, .mobile-header { display: none; }
}

/* ====== Modal Popup ====== */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1000;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s ease;
}
.modal[aria-hidden="false"] {
    opacity: 1; pointer-events: auto;
}
.modal__overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
}
.modal__content {
    position: relative;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    width: 90%; max-width: 900px;
    max-height: 90vh;
    display: flex; flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    z-index: 1001;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
.modal[aria-hidden="false"] .modal__content {
    transform: scale(1);
}
.modal__close {
    position: absolute;
    top: 1rem; right: 1rem;
    background: rgba(0,0,0,0.5); border: none;
    color: #fff; font-size: 1.2rem; cursor: pointer;
    width: 2rem; height: 2rem; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    z-index: 1002;
    transition: background 0.2s;
}
.modal__close:hover {
    background: var(--c-accent);
}
.modal__body {
    padding: 1rem;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    overflow-y: auto;
}
.modal__slider {
    position: relative;
    width: 100%;
    display: flex; align-items: center; justify-content: center;
}
.modal__slides {
    width: 100%;
    display: flex; overflow: hidden;
    border-radius: 6px;
}
.modal__slide {
    min-width: 100%;
    display: none;
    justify-content: center;
    align-items: center;
}
.modal__slide.active {
    display: flex;
}
.modal__slide img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.modal__prev, .modal__next {
    position: absolute;
    top: 50%; transform: translateY(-50%);
    background: rgba(0,0,0,0.5); border: none;
    color: #fff; font-size: 1.5rem; cursor: pointer;
    padding: 1rem 0.75rem; border-radius: 4px;
    z-index: 1002;
    transition: background 0.2s;
}
.modal__prev { left: 10px; }
.modal__next { right: 10px; }
.modal__prev:hover, .modal__next:hover {
    background: var(--c-accent);
}
.modal__dots {
    display: flex; gap: 8px; margin-top: 1rem;
}
.modal__dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--c-border); cursor: pointer;
    transition: background 0.2s;
}
.modal__dot.active {
    background: var(--c-accent);
}