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

/* VARIABLES - clean, tegas */
:root {
--bg: #ffffff;
--text-dark: #0a0c10;
--text-muted: #475569;
--border-color: #e2e8f0;
--accent: #0f172a;
--accent-line: #1e293b;
--card-bg: #f8fafc;
--graphic-dot: #cbd5e1;
}

body.dark {
--bg: #05080f;
--text-dark: #f1f5f9;
--text-muted: #94a3b8;
--border-color: #1e293b;
--accent: #e2e8f0;
--accent-line: #94a3b8;
--card-bg: #0f172a;
--graphic-dot: #334155;
}

body {
font-family: 'Inter', system-ui, sans-serif;
font-weight: 500;
background: var(--bg);
color: var(--text-dark);
transition: background 0.2s ease, color 0.2s ease;
scroll-behavior: smooth;
}

/* container lebar bersih */
.container {
max-width: 1120px;
margin: 0 auto;
padding: 2rem 2rem;
}

/* ===== NAVBAR ===== */
.navbar {
position: sticky;
top: 0;
background: rgba(var(--bg-rgb), 0.85);
backdrop-filter: blur(12px);
border-bottom: 1px solid var(--border-color);
z-index: 100;
background: var(--bg);
}

.nav-inner {
max-width: 1120px;
margin: 0 auto;
padding: 1rem 2rem;
display: flex;
justify-content: space-between;
align-items: center;
}

.logo {
font-weight: 800;
font-size: 1.4rem;
letter-spacing: -0.5px;
background: linear-gradient(135deg, var(--text-dark), var(--accent-line));
background-clip: text;
-webkit-background-clip: text;
color: transparent;
}

.nav-links {
display: flex;
gap: 2rem;
align-items: center;
}

.nav-links a {
text-decoration: none;
font-size: 0.85rem;
font-weight: 500;
color: var(--text-muted);
transition: 0.2s;
}

.nav-links a:hover {
color: var(--text-dark);
}

/* language switcher buttons */
.lang-switch {
display: flex;
gap: 6px;
background: var(--card-bg);
border: 1px solid var(--border-color);
border-radius: 40px;
padding: 4px 8px;
}

.lang-btn {
background: transparent;
border: none;
font-size: 0.7rem;
font-weight: 600;
padding: 4px 10px;
border-radius: 30px;
cursor: pointer;
color: var(--text-muted);
transition: 0.1s;
}

.lang-btn.active {
background: var(--accent-line);
color: var(--bg);
}

.dark-toggle {
background: transparent;
border: 1px solid var(--border-color);
border-radius: 50%;
width: 36px;
height: 36px;
display: inline-flex;
align-items: center;
justify-content: center;
cursor: pointer;
color: var(--text-dark);
}

.hamburger {
display: none;
flex-direction: column;
gap: 4px;
cursor: pointer;
}

.hamburger span {
width: 22px;
height: 2px;
background: var(--text-dark);
}

.mobile-menu {
position: fixed;
top: 68px;
right: 1rem;
background: var(--bg);
border: 1px solid var(--border-color);
padding: 1.5rem;
display: none;
flex-direction: column;
gap: 1rem;
z-index: 200;
box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

/* HERO + GRAFIS (garis, grid, dot) */
.hero {
display: grid;
grid-template-columns: 1.3fr 0.9fr;
gap: 3rem;
margin: 2rem 0 3.5rem;
position: relative;
}

.hero::before {
content: "";
position: absolute;
top: -20px;
right: 0;
width: 160px;
height: 160px;
background-image: radial-gradient(var(--graphic-dot) 1.2px, transparent 1.2px);
background-size: 18px 18px;
opacity: 0.35;
pointer-events: none;
z-index: 0;
}

.badge {
font-size: 0.7rem;
text-transform: uppercase;
letter-spacing: 2px;
border-left: 3px solid var(--accent-line);
padding-left: 10px;
margin-bottom: 1rem;
font-weight: 600;
color: var(--accent-line);
}

h1 {
font-size: 3rem;
font-weight: 800;
line-height: 1.2;
letter-spacing: -1px;
}

.hero-desc {
color: var(--text-muted);
margin: 1rem 0 1.5rem;
font-size: 0.95rem;
line-height: 1.5;
}

.contact-row {
display: flex;
flex-wrap: wrap;
gap: 1.2rem;
margin-top: 0.5rem;
}

.contact-link {
text-decoration: none;
font-size: 0.8rem;
font-weight: 500;
color: var(--text-dark);
border-bottom: 1px solid var(--border-color);
padding-bottom: 3px;
display: inline-flex;
align-items: center;
gap: 8px;
}

/* elemen grafis foto / avatar dengan garis geometris */
.graphic-area {
position: relative;
display: flex;
justify-content: center;
}

.geo-frame {
width: 240px;
height: 240px;
background: var(--card-bg);
border: 1px solid var(--border-color);
position: relative;
display: flex;
align-items: center;
justify-content: center;
flex-direction: column;
transition: 0.2s;
}

.geo-frame i {
font-size: 3.5rem;
color: var(--accent-line);
margin-bottom: 12px;
opacity: 0.7;
}

.geo-frame span {
font-size: 0.8rem;
font-weight: 500;
}

.geo-frame::after {
content: "";
position: absolute;
bottom: -12px;
right: -12px;
width: 60px;
height: 60px;
border-right: 2px solid var(--accent-line);
border-bottom: 2px solid var(--accent-line);
z-index: -1;
}

.geo-frame::before {
content: "";
position: absolute;
top: -12px;
left: -12px;
width: 50px;
height: 50px;
border-left: 2px solid var(--accent-line);
border-top: 2px solid var(--accent-line);
}

/* Section title style tegas */
.section-title {
font-size: 1.5rem;
font-weight: 700;
margin: 2rem 0 1.2rem;
display: inline-block;
border-bottom: 3px solid var(--accent-line);
padding-bottom: 5px;
}

hr.divider {
margin: 2rem 0;
border: none;
border-top: 1px solid var(--border-color);
}

/* grid cards */
.grid-2 {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 1.5rem;
margin: 1rem 0;
}

.exp-card,
.edu-card,
.org-card {
border: 1px solid var(--border-color);
background: var(--card-bg);
padding: 1.3rem;
transition: transform 0.15s, border-color 0.1s;
}

.exp-card:hover,
.edu-card:hover {
transform: translateY(-4px);
border-color: var(--accent-line);
}

.exp-card h3,
.edu-card h3 {
font-size: 1.05rem;
font-weight: 700;
margin-bottom: 0.2rem;
}

.date {
font-size: 0.65rem;
text-transform: uppercase;
letter-spacing: 0.5px;
color: var(--accent-line);
font-weight: 600;
margin: 0.3rem 0 0.7rem;
}

.desc-list {
list-style: none;
}

.desc-list li {
font-size: 0.8rem;
color: var(--text-muted);
margin-bottom: 0.5rem;
display: flex;
gap: 0.6rem;
}

.desc-list li i {
font-size: 0.7rem;
margin-top: 0.2rem;
}

.skills-wrapper {
display: flex;
flex-wrap: wrap;
gap: 2rem;
margin-top: 1rem;
}

.skill-block {
flex: 1;
}

.skill-block h3 {
font-size: 1rem;
border-left: 3px solid var(--accent-line);
padding-left: 10px;
margin-bottom: 1rem;
}

.skill-tag {
border: 1px solid var(--border-color);
padding: 0.2rem 1rem;
font-size: 0.75rem;
font-weight: 500;
display: inline-block;
margin: 0.25rem;
transition: 0.1s;
}

.skill-tag:hover {
background: var(--accent-line);
color: var(--bg);
border-color: var(--accent-line);
}

/* extra graphic line elements */
.line-graphic {
width: 100%;
height: 1px;
background: repeating-linear-gradient(90deg, var(--border-color) 0px, var(--border-color) 8px, transparent 8px,
transparent 16px);
margin: 1rem 0;
}

footer {
margin-top: 3rem;
padding: 1rem 0;
border-top: 1px solid var(--border-color);
text-align: center;
font-size: 0.7rem;
}

@media (max-width: 760px) {
.hero {
grid-template-columns: 1fr;
gap: 2rem;
}

.grid-2 {
grid-template-columns: 1fr;
}

.nav-links {
display: none;
}

.hamburger {
display: flex;
}

.container {
padding: 1rem 1.2rem;
}

h1 {
font-size: 2.2rem;
}
}

.reveal {
opacity: 0;
transform: translateY(15px);
transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.revealed {
opacity: 1;
transform: translateY(0);
}

.click-effect {
transform: scale(0.98);
transition: transform 0.07s;
}

/* Tambahkan CSS untuk Project Grid & Card */
.project-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 1.8rem;
margin: 2rem 0 2rem;
}

.project-card {
background: var(--card-bg);
border: 1px solid var(--border-color);
transition: transform 0.2s, border-color 0.2s;
overflow: hidden;
}

.project-card:hover {
transform: translateY(-6px);
border-color: var(--accent-line);
}

.project-thumbnail {
position: relative;
width: 100%;
padding-bottom: 56.25%;
/* Rasio 16:9 */
background: var(--accent);
overflow: hidden;
}

.project-thumbnail img {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
object-fit: cover;
display: block;
}

.project-info {
padding: 1.2rem;
}

.project-info h3 {
font-size: 1rem;
font-weight: 700;
margin-bottom: 0.4rem;
}

.project-info p {
font-size: 0.8rem;
color: var(--text-muted);
line-height: 1.4;
}

.project-stack {
display: flex;
flex-wrap: wrap;
gap: 0.4rem;
margin-top: 0.8rem;
}

.project-stack span {
font-size: 0.65rem;
background: var(--bg);
border: 1px solid var(--border-color);
padding: 0.2rem 0.6rem;
border-radius: 20px;
}

.project-list {
margin-top: 2rem;
border-top: 1px solid var(--border-color);
padding-top: 1.5rem;
}

.project-list-item {
display: flex;
justify-content: space-between;
align-items: baseline;
flex-wrap: wrap;
padding: 0.8rem 0;
border-bottom: 1px solid var(--border-color);
}

.project-list-item:last-child {
border-bottom: none;
}

.project-list-title {
font-weight: 600;
font-size: 0.9rem;
width: 30%;
min-width: 150px;
}

.project-list-desc {
font-size: 0.8rem;
color: var(--text-muted);
width: 60%;
}

@media (max-width: 680px) {
.project-list-item {
flex-direction: column;
gap: 0.3rem;
}

.project-list-title,
.project-list-desc {
width: 100%;
}
}