/* ===== CSS VARIABLES ===== */
:root {
/* Dark: deep navy-indigo base, purple-blue accent */
--bg: #07080f;
--bg2: #0b0d1a;
--bg3: #0f1222;
--surface: #12152b;
--surface2: #181c35;
--border: #1f2444;
--border2: #2a3060;
--text: #e4e8ff;
--text2: #8b96c8;
--text3: #4d5a8a;
--accent: #818cf8;        /* indigo-400 */
--accent2: #a855f7;       /* purple-500 */
--accent3: #38bdf8;       /* sky-400 */
--green: #34d399;
--red: #f87171;
--glow: rgba(129, 140, 248, 0.20);
--glow2: rgba(168, 85, 247, 0.18);
--card-bg: rgba(18, 21, 43, 0.88);
--nav-bg: rgba(7, 8, 15, 0.93);
--font-display: 'Syne', sans-serif;
--font-mono: 'Space Mono', monospace;
--font-body: 'DM Sans', sans-serif;
--radius: 14px;
--radius-sm: 8px;
--shadow: 0 8px 32px rgba(0,0,0,0.55);
--shadow-glow: 0 0 40px rgba(129, 140, 248, 0.15);
--transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-theme="light"] {
/* Light: cool blue-slate — not too bright, readable text */
--bg: #d6daf0;
--bg2: #cdd2eb;
--bg3: #c3c9e4;
--surface: #e2e6f5;
--surface2: #d9ddf0;
--border: #a8b0d8;
--border2: #8f99c8;
--text: #111628;
--text2: #2e3660;
--text3: #5a6494;
--glow: rgba(99, 102, 200, 0.14);
--glow2: rgba(140, 70, 210, 0.12);
--card-bg: rgba(226, 230, 245, 0.92);
--nav-bg: rgba(214, 218, 240, 0.95);
--shadow: 0 8px 32px rgba(20,25,80,0.13);
--shadow-glow: 0 0 40px rgba(99, 102, 200, 0.14);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
font-family: var(--font-body);
background: var(--bg);
color: var(--text);
min-height: 100vh;
overflow-x: hidden;
transition: background var(--transition), color var(--transition);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent2); border-radius: 99px; }

/* ===== NOISE OVERLAY ===== */
body::before {
content: '';
position: fixed;
inset: 0;
background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
pointer-events: none;
z-index: 0;
opacity: 0.6;
}

/* ===== CURSOR ===== */
.cursor {
width: 12px; height: 12px;
background: var(--accent);
border-radius: 50%;
position: fixed;
pointer-events: none;
z-index: 9999;
transition: transform 0.15s ease, opacity 0.2s;
mix-blend-mode: screen;
}
.cursor-ring {
width: 36px; height: 36px;
border: 1.5px solid var(--accent);
border-radius: 50%;
position: fixed;
pointer-events: none;
z-index: 9998;
opacity: 0.5;
transition: transform 0.4s cubic-bezier(0.17,0.67,0.83,0.67), opacity 0.2s;
}

/* ===== NAVBAR ===== */
nav {
position: fixed;
top: 0; left: 0; right: 0;
z-index: 100;
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 5vw;
height: 64px;
background: var(--nav-bg);
backdrop-filter: blur(18px) saturate(160%);
border-bottom: 1px solid var(--border);
transition: background var(--transition);
}
.nav-logo {
font-family: var(--font-display);
font-size: 1.25rem;
font-weight: 800;
letter-spacing: -0.03em;
display: flex;
align-items: center;
gap: 8px;
}
.nav-logo span { color: var(--accent); }
.nav-logo .dot { width: 7px; height: 7px; background: var(--accent); border-radius: 50%; display: inline-block; animation: pulse 2s infinite; }
.nav-links {
display: flex;
gap: 2rem;
align-items: center;
}
.nav-links a {
font-family: var(--font-mono);
font-size: 0.78rem;
color: var(--text2);
letter-spacing: 0.05em;
transition: color var(--transition);
position: relative;
}
.nav-links a::after {
content: '';
position: absolute;
bottom: -3px;
left: 0; right: 100%;
height: 1px;
background: var(--accent);
transition: right var(--transition);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { right: 0; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.theme-toggle {
background: var(--surface);
border: 1px solid var(--border);
border-radius: 99px;
width: 44px; height: 24px;
cursor: pointer;
position: relative;
transition: background var(--transition);
}
.theme-toggle .knob {
position: absolute;
top: 3px; left: 3px;
width: 18px; height: 18px;
border-radius: 50%;
background: var(--accent);
transition: transform var(--transition);
display: flex; align-items: center; justify-content: center;
font-size: 10px;
}
[data-theme="light"] .theme-toggle .knob { transform: translateX(20px); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.mobile-menu {
display: none;
position: fixed;
top: 64px; left: 0; right: 0;
background: var(--nav-bg);
backdrop-filter: blur(18px);
border-bottom: 1px solid var(--border);
flex-direction: column;
padding: 1.5rem 5vw;
gap: 1.2rem;
z-index: 99;
}
.mobile-menu a { font-family: var(--font-mono); font-size: 0.9rem; color: var(--text2); }
.mobile-menu.open { display: flex; }

/* ===== HERO ===== */
.hero {
min-height: 100vh;
display: flex;
align-items: center;
padding: 120px 5vw 80px;
position: relative;
overflow: hidden;
}
.hero-bg {
position: absolute;
inset: 0;
background:
    radial-gradient(ellipse 70% 60% at 60% 40%, rgba(129,140,248,0.10) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 20% 70%, rgba(168,85,247,0.12) 0%, transparent 65%);
pointer-events: none;
}
.hero-grid {
position: absolute;
inset: 0;
background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
background-size: 48px 48px;
opacity: 0.18;
mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.hero-badge {
display: inline-flex;
align-items: center;
gap: 8px;
font-family: var(--font-mono);
font-size: 0.72rem;
color: var(--accent);
border: 1px solid rgba(129,140,248,0.30);
background: rgba(129,140,248,0.08);
border-radius: 99px;
padding: 5px 14px;
letter-spacing: 0.08em;
margin-bottom: 1.5rem;
opacity: 0;
animation: fadeUp 0.6s 0.2s forwards;
}
.hero-badge .blink { animation: blink 1.2s step-end infinite; }
.hero-title {
font-family: var(--font-display);
font-size: clamp(2.6rem, 6vw, 5rem);
font-weight: 800;
line-height: 1.05;
letter-spacing: -0.04em;
margin-bottom: 0.5rem;
opacity: 0;
animation: fadeUp 0.7s 0.35s forwards;
}
.hero-title .line2 { color: var(--accent); display: block; }
.hero-subtitle {
font-family: var(--font-mono);
font-size: clamp(0.85rem, 2vw, 1rem);
color: var(--text2);
margin-bottom: 1.5rem;
opacity: 0;
animation: fadeUp 0.7s 0.5s forwards;
}
.hero-subtitle .typed-cursor { color: var(--accent); animation: blink 1s step-end infinite; }
.hero-desc {
font-size: 1.05rem;
color: var(--text2);
line-height: 1.75;
max-width: 560px;
margin-bottom: 2.5rem;
opacity: 0;
animation: fadeUp 0.7s 0.65s forwards;
}
.hero-actions {
display: flex;
gap: 1rem;
flex-wrap: wrap;
opacity: 0;
animation: fadeUp 0.7s 0.8s forwards;
}
.btn {
display: inline-flex;
align-items: center;
gap: 8px;
font-family: var(--font-mono);
font-size: 0.82rem;
letter-spacing: 0.05em;
padding: 0.75rem 1.5rem;
border-radius: var(--radius-sm);
cursor: pointer;
border: none;
transition: all var(--transition);
position: relative;
overflow: hidden;
}
.btn::before {
content: '';
position: absolute;
inset: 0;
opacity: 0;
transition: opacity var(--transition);
}
.btn:hover::before { opacity: 1; }
.btn-primary {
background: var(--accent);
color: #050810;
font-weight: 700;
box-shadow: 0 0 24px rgba(129,140,248,0.35);
}
.btn-primary::before { background: rgba(255,255,255,0.15); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 36px rgba(129,140,248,0.55); }
.btn-outline {
background: transparent;
color: var(--text);
border: 1px solid var(--border2);
}
.btn-outline::before { background: var(--surface); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.hero-scroll {
position: absolute;
bottom: 2rem;
left: 50%;
transform: translateX(-50%);
display: flex;
flex-direction: column;
align-items: center;
gap: 6px;
opacity: 0;
animation: fadeIn 1s 1.5s forwards;
}
.hero-scroll span { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text3); letter-spacing: 0.12em; }
.scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--accent), transparent); animation: scrollPulse 2s ease-in-out infinite; }
.hero-float {
position: absolute;
right: 5vw;
top: 50%;
transform: translateY(-50%);
display: flex;
flex-direction: column;
gap: 1rem;
opacity: 0;
animation: fadeLeft 0.9s 1s forwards;
}
.stat-card {
background: var(--card-bg);
backdrop-filter: blur(16px);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 1rem 1.5rem;
min-width: 180px;
transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateX(-6px); box-shadow: var(--shadow-glow); }
.stat-num {
font-family: var(--font-display);
font-size: 2rem;
font-weight: 800;
color: var(--accent);
line-height: 1;
}
.stat-label { font-size: 0.78rem; color: var(--text3); margin-top: 4px; }

/* ===== SECTION BASE ===== */
section { padding: 100px 5vw; position: relative; }
.section-header {
display: flex;
align-items: center;
gap: 1rem;
margin-bottom: 3.5rem;
}
.section-num {
font-family: var(--font-mono);
font-size: 0.75rem;
color: var(--accent);
letter-spacing: 0.1em;
}
.section-title {
font-family: var(--font-display);
font-size: clamp(1.8rem, 3.5vw, 2.8rem);
font-weight: 800;
letter-spacing: -0.04em;
}
.section-line {
flex: 1;
height: 1px;
background: linear-gradient(to right, var(--border2), transparent);
}

/* ===== ABOUT ===== */
.about-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 4rem;
align-items: center;
}
.about-text p {
color: var(--text2);
line-height: 1.85;
font-size: 1.02rem;
margin-bottom: 1.2rem;
}
.about-text p strong { color: var(--text); }
.about-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 1.5rem; }
.tag {
font-family: var(--font-mono);
font-size: 0.72rem;
padding: 4px 12px;
border-radius: 99px;
border: 1px solid var(--border2);
color: var(--text2);
letter-spacing: 0.05em;
transition: all var(--transition);
}
.tag:hover { border-color: var(--accent); color: var(--accent); background: rgba(129,140,248,0.08); }
.about-visual {
position: relative;
display: flex;
justify-content: center;
}
.code-block {
background: var(--bg2);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 1.5rem;
font-family: var(--font-mono);
font-size: 0.8rem;
line-height: 1.8;
width: 100%;
max-width: 420px;
box-shadow: var(--shadow);
position: relative;
overflow: hidden;
}
.code-block::before {
content: '';
position: absolute;
top: 0; left: 0; right: 0;
height: 3px;
background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.code-header {
display: flex;
align-items: center;
gap: 6px;
margin-bottom: 1rem;
padding-bottom: 0.75rem;
border-bottom: 1px solid var(--border);
}
.code-dot { width: 10px; height: 10px; border-radius: 50%; }
.code-dot:nth-child(1) { background: #ff5f56; }
.code-dot:nth-child(2) { background: #ffbd2e; }
.code-dot:nth-child(3) { background: #27c93f; }
.code-filename { margin-left: auto; font-size: 0.68rem; color: var(--text3); }
.c-keyword { color: #c792ea; }
.c-func { color: #82aaff; }
.c-str { color: #c3e88d; }
.c-comment { color: #546e7a; }
.c-var { color: var(--accent); }
.c-num { color: var(--accent3); }

/* ===== SKILLS ===== */
.skills-section { background: var(--bg2); }
.skills-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
gap: 1.5rem;
}
.skill-card {
background: var(--card-bg);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 1.5rem;
backdrop-filter: blur(12px);
transition: all var(--transition);
position: relative;
overflow: hidden;
}
.skill-card::before {
content: '';
position: absolute;
inset: 0;
opacity: 0;
background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(129,140,248,0.08) 0%, transparent 60%);
transition: opacity var(--transition);
}
.skill-card:hover { border-color: var(--border2); transform: translateY(-4px); box-shadow: var(--shadow); }
.skill-card:hover::before { opacity: 1; }
.skill-icon {
width: 44px; height: 44px;
border-radius: var(--radius-sm);
display: flex; align-items: center; justify-content: center;
font-size: 1.4rem;
margin-bottom: 1rem;
background: var(--surface);
border: 1px solid var(--border);
}
.skill-name {
font-family: var(--font-display);
font-size: 1rem;
font-weight: 700;
margin-bottom: 0.3rem;
}
.skill-type {
font-family: var(--font-mono);
font-size: 0.68rem;
color: var(--text3);
letter-spacing: 0.08em;
margin-bottom: 1rem;
}
.skill-bar-wrap { height: 4px; background: var(--border); border-radius: 99px; overflow: hidden; }
.skill-bar {
height: 100%;
border-radius: 99px;
background: linear-gradient(90deg, var(--accent), var(--accent2));
width: 0;
transition: width 1.2s cubic-bezier(0.4,0,0.2,1);
}
.skill-level { font-family: var(--font-mono); font-size: 0.68rem; color: var(--accent); margin-top: 6px; text-align: right; }

/* ===== PROJECTS ===== */
.projects-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
gap: 1.5rem;
}
.project-card {
background: var(--card-bg);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 1.75rem;
backdrop-filter: blur(12px);
transition: all var(--transition);
position: relative;
overflow: hidden;
display: flex;
flex-direction: column;
}
.project-card::after {
content: '';
position: absolute;
top: 0; left: 0; right: 0;
height: 2px;
background: linear-gradient(90deg, var(--accent), var(--accent2));
transform: scaleX(0);
transform-origin: left;
transition: transform var(--transition);
}
.project-card:hover { border-color: var(--border2); transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.project-card:hover::after { transform: scaleX(1); }
.project-header {
display: flex;
align-items: flex-start;
justify-content: space-between;
margin-bottom: 1rem;
gap: 1rem;
}
.project-icon {
font-size: 2rem;
width: 52px; height: 52px;
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
display: flex; align-items: center; justify-content: center;
flex-shrink: 0;
}
.project-links { display: flex; gap: 8px; }
.project-link {
width: 32px; height: 32px;
border: 1px solid var(--border);
border-radius: var(--radius-sm);
display: flex; align-items: center; justify-content: center;
color: var(--text3);
transition: all var(--transition);
font-size: 0.85rem;
}
.project-link:hover { border-color: var(--accent); color: var(--accent); background: rgba(129,140,248,0.08); }
.project-title {
font-family: var(--font-display);
font-size: 1.15rem;
font-weight: 700;
margin-bottom: 0.6rem;
}
.project-desc {
font-size: 0.88rem;
color: var(--text2);
line-height: 1.7;
flex: 1;
margin-bottom: 1.25rem;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.project-tag {
font-family: var(--font-mono);
font-size: 0.67rem;
padding: 3px 10px;
border-radius: 99px;
letter-spacing: 0.04em;
}
.tag-cyan { background: rgba(129,140,248,0.12); color: #a5b4fc; border: 1px solid rgba(129,140,248,0.25); }
.tag-purple { background: rgba(124,58,237,0.1); color: #a78bfa; border: 1px solid rgba(124,58,237,0.2); }
.tag-amber { background: rgba(245,158,11,0.1); color: var(--accent3); border: 1px solid rgba(245,158,11,0.2); }
.tag-green { background: rgba(16,185,129,0.1); color: var(--green); border: 1px solid rgba(16,185,129,0.2); }
.tag-red { background: rgba(239,68,68,0.1); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }

/* ===== EXPERIENCE/TIMELINE ===== */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
content: '';
position: absolute;
left: 0; top: 0; bottom: 0;
width: 1px;
background: linear-gradient(to bottom, var(--accent), var(--accent2), transparent);
}
.timeline-item {
position: relative;
margin-bottom: 2.5rem;
}
.timeline-dot {
position: absolute;
left: -2rem;
top: 4px;
width: 10px; height: 10px;
border-radius: 50%;
background: var(--accent);
border: 2px solid var(--bg);
box-shadow: 0 0 10px rgba(129,140,248,0.55);
transform: translateX(-4.5px);
}
.timeline-date {
font-family: var(--font-mono);
font-size: 0.72rem;
color: var(--accent);
letter-spacing: 0.08em;
margin-bottom: 0.4rem;
}
.timeline-title {
font-family: var(--font-display);
font-size: 1.05rem;
font-weight: 700;
margin-bottom: 0.25rem;
}
.timeline-sub { font-size: 0.82rem; color: var(--text3); margin-bottom: 0.6rem; }
.timeline-desc { font-size: 0.9rem; color: var(--text2); line-height: 1.7; }

/* ===== CONTACT ===== */
.contact-section { background: var(--bg2); }
.contact-wrapper {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 4rem;
align-items: start;
}
.contact-info h3 {
font-family: var(--font-display);
font-size: 1.5rem;
font-weight: 700;
margin-bottom: 1rem;
}
.contact-info p { color: var(--text2); line-height: 1.75; margin-bottom: 2rem; }
.contact-items { display: flex; flex-direction: column; gap: 1rem; }
.contact-item {
display: flex;
align-items: center;
gap: 1rem;
padding: 1rem 1.25rem;
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius);
transition: all var(--transition);
}
.contact-item:hover { border-color: var(--accent); background: rgba(129,140,248,0.05); transform: translateX(4px); }
.contact-item-icon {
width: 40px; height: 40px;
background: rgba(129,140,248,0.10);
border: 1px solid rgba(129,140,248,0.25);
border-radius: var(--radius-sm);
display: flex; align-items: center; justify-content: center;
font-size: 1.1rem;
flex-shrink: 0;
}
.contact-item-label { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text3); letter-spacing: 0.06em; }
.contact-item-value { font-size: 0.9rem; color: var(--text); margin-top: 2px; }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text3); letter-spacing: 0.06em; }
.form-group input,
.form-group textarea {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
padding: 0.75rem 1rem;
color: var(--text);
font-family: var(--font-body);
font-size: 0.92rem;
transition: all var(--transition);
outline: none;
resize: none;
}
.form-group input:focus,
.form-group textarea:focus {
border-color: var(--accent);
background: var(--surface2);
box-shadow: 0 0 0 3px rgba(129,140,248,0.12);
}
.form-group textarea { min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ===== FOOTER ===== */
footer {
padding: 2rem 5vw;
border-top: 1px solid var(--border);
display: flex;
align-items: center;
justify-content: space-between;
flex-wrap: wrap;
gap: 1rem;
}
footer p { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text3); }
.social-links { display: flex; gap: 0.75rem; }
.social-link {
width: 36px; height: 36px;
border: 1px solid var(--border);
border-radius: var(--radius-sm);
display: flex; align-items: center; justify-content: center;
color: var(--text3);
font-size: 0.9rem;
transition: all var(--transition);
}
.social-link:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
from { opacity: 0; transform: translateY(24px); }
to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeLeft {
from { opacity: 0; transform: translate(30px, -50%); }
to { opacity: 1; transform: translate(0, -50%); }
}
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
@keyframes pulse {
0%, 100% { opacity: 1; transform: scale(1); }
50% { opacity: 0.5; transform: scale(0.85); }
}
@keyframes blink {
50% { opacity: 0; }
}
@keyframes scrollPulse {
0%, 100% { opacity: 1; transform: scaleY(1); transform-origin: top; }
50% { opacity: 0.4; }
}
@keyframes float {
0%, 100% { transform: translateY(0) translateX(-50%); }
50% { transform: translateY(-10px) translateX(-50%); }
}

/* ===== REVEAL ANIMATION ===== */
.reveal {
opacity: 0;
transform: translateY(36px);
transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible {
opacity: 1;
transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ===== VPS BADGE ===== */
.vps-section {
background: linear-gradient(135deg, rgba(168,85,247,0.10), rgba(129,140,248,0.07));
border: 1px solid var(--border2);
border-radius: var(--radius);
padding: 2rem;
margin-top: 3rem;
display: flex;
align-items: center;
gap: 2rem;
flex-wrap: wrap;
}
.vps-icon { font-size: 3rem; }
.vps-content h4 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
.vps-content p { font-size: 0.9rem; color: var(--text2); }
.vps-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 0.75rem; }

/* ===== CERTIFICATES ===== */
.cert-section { background: var(--bg2); }
.cert-filter {
display: flex;
gap: 8px;
flex-wrap: wrap;
margin-bottom: 2.5rem;
}
.cert-filter-btn {
font-family: var(--font-mono);
font-size: 0.72rem;
letter-spacing: 0.06em;
padding: 6px 16px;
border-radius: 99px;
border: 1px solid var(--border2);
background: transparent;
color: var(--text2);
cursor: pointer;
transition: all var(--transition);
}
.cert-filter-btn:hover,
.cert-filter-btn.active {
border-color: var(--accent);
color: var(--accent);
background: rgba(129,140,248,0.10);
}
.cert-grid {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;      /* MENCEGAH card turun ke baris baru */
  gap: 1.5rem;
  overflow-x: auto;       /* tambah scroll horizontal jika terlalu panjang */
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  padding-bottom: 0.75rem;
}


/* optional: nice scrollbar styling */
.cert-grid::-webkit-scrollbar {
  height: 6px;
}
.cert-grid::-webkit-scrollbar-track {
  background: var(--border);
  border-radius: 10px;
}
.cert-grid::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 10px;
}

/* each card becomes a fixed-width column */
.cert-card {
  flex: 0 0 320px;          /* fixed width, prevents shrinking */
  scroll-snap-align: start;
  /* keep all other existing properties */
}
.cert-card {
background: var(--card-bg);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
backdrop-filter: blur(12px);
transition: all var(--transition);
display: flex;
flex-direction: column;
position: relative;
}
.cert-card::before {
content: '';
position: absolute;
inset: 0;
border-radius: var(--radius);
padding: 1px;
background: linear-gradient(135deg, var(--accent), var(--accent2));
-webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
-webkit-mask-composite: xor;
mask-composite: exclude;
opacity: 0;
transition: opacity var(--transition);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.45); }
.cert-card:hover::before { opacity: 1; }
.cert-card[data-hidden="true"] { display: none; }
.cert-img-wrap {
width: 100%;
height: 180px;
position: relative;
overflow: hidden;
flex-shrink: 0;
background: var(--surface);
}
/* actual image if provided */
.cert-img-wrap img {
width: 100%;
height: 100%;
object-fit: cover;
object-position: top center;
display: block;
transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}
.cert-card:hover .cert-img-wrap img { transform: scale(1.05); }
/* placeholder shown when no real image */
.cert-img-placeholder {
position: absolute;
inset: 0;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: 10px;
}
.cert-img-placeholder .ph-icon { font-size: 3rem; filter: drop-shadow(0 0 18px currentColor); }
.cert-img-placeholder .ph-label {
font-family: var(--font-mono);
font-size: 0.62rem;
letter-spacing: 0.14em;
opacity: 0.6;
text-transform: uppercase;
}
/* overlay gradient fading into card body */
.cert-img-wrap::after {
content: '';
position: absolute;
bottom: 0; left: 0; right: 0;
height: 60px;
background: linear-gradient(to bottom, transparent, var(--card-bg));
pointer-events: none;
}
/* category colour themes */
.cert-img-wrap.ci-python   { background: linear-gradient(145deg, #0e1130, #1e2260, #2a1a50); }
.cert-img-wrap.ci-web      { background: linear-gradient(145deg, #0a1528, #112244, #1a2f60); }
.cert-img-wrap.ci-linux    { background: linear-gradient(145deg, #120d28, #1e1245, #2d1b5e); }
.cert-img-wrap.ci-network  { background: linear-gradient(145deg, #0a1520, #122035, #1a3050); }
.cert-img-wrap.ci-db       { background: linear-gradient(145deg, #0f0e28, #1a1848, #281e62); }
.cert-img-wrap.ci-security { background: linear-gradient(145deg, #130820, #220e40, #3d1a6b); }
.cert-img-wrap.ci-cloud    { background: linear-gradient(145deg, #081420, #0f2040, #1a3265); }
.cert-img-wrap.ci-php      { background: linear-gradient(145deg, #100c28, #1c1048, #3b2068); }
/* grid lines inside placeholder */
.cert-img-wrap::before {
content: '';
position: absolute;
inset: 0;
background-image:
    linear-gradient(rgba(129,140,248,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(129,140,248,0.07) 1px, transparent 1px);
background-size: 28px 28px;
pointer-events: none;
z-index: 0;
}
.cert-img-placeholder { z-index: 1; }
/* issuer logo pill floating top-left */
.cert-issuer-pill {
position: absolute;
top: 10px; left: 10px;
z-index: 2;
background: rgba(7,8,15,0.72);
backdrop-filter: blur(8px);
border: 1px solid var(--border2);
border-radius: 99px;
padding: 3px 10px;
font-family: var(--font-mono);
font-size: 0.6rem;
letter-spacing: 0.08em;
color: var(--accent);
display: flex;
align-items: center;
gap: 5px;
}
.cert-issuer-pill .pip { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.cert-body { padding: 1.25rem 1.4rem 1.4rem; flex: 1; display: flex; flex-direction: column; }
.cert-issuer {
font-family: var(--font-mono);
font-size: 0.65rem;
letter-spacing: 0.1em;
color: var(--accent);
margin-bottom: 0.4rem;
text-transform: uppercase;
}
.cert-title {
font-family: var(--font-display);
font-size: 0.98rem;
font-weight: 700;
line-height: 1.35;
margin-bottom: 0.5rem;
}
.cert-desc {
font-size: 0.82rem;
color: var(--text2);
line-height: 1.65;
flex: 1;
margin-bottom: 1rem;
}
.cert-footer {
display: flex;
align-items: center;
justify-content: space-between;
padding-top: 0.9rem;
border-top: 1px solid var(--border);
flex-wrap: wrap;
gap: 0.5rem;
}
.cert-date {
font-family: var(--font-mono);
font-size: 0.67rem;
color: var(--text3);
letter-spacing: 0.06em;
}
.cert-badge {
font-family: var(--font-mono);
font-size: 0.65rem;
padding: 3px 10px;
border-radius: 99px;
letter-spacing: 0.04em;
}
.cert-link {
display: inline-flex;
align-items: center;
gap: 5px;
font-family: var(--font-mono);
font-size: 0.68rem;
color: var(--accent);
border: 1px solid rgba(129,140,248,0.3);
border-radius: var(--radius-sm);
padding: 4px 10px;
transition: all var(--transition);
}
.cert-link:hover { background: rgba(129,140,248,0.12); border-color: var(--accent); }
.cert-stats {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1rem;
margin-bottom: 2.5rem;
}
.cert-stat-card {
background: var(--card-bg);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: 1.2rem;
text-align: center;
backdrop-filter: blur(12px);
}
.cert-stat-num {
font-family: var(--font-display);
font-size: 2rem;
font-weight: 800;
background: linear-gradient(135deg, var(--accent), var(--accent2));
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
line-height: 1;
margin-bottom: 4px;
}
.cert-stat-label { font-size: 0.78rem; color: var(--text3); }

/* ===== MODAL ===== */
.cert-modal-overlay {
position: fixed;
inset: 0;
background: rgba(7,8,15,0.85);
backdrop-filter: blur(8px);
z-index: 500;
display: flex;
align-items: center;
justify-content: center;
padding: 1rem;
opacity: 0;
pointer-events: none;
transition: opacity var(--transition);
}
.cert-modal-overlay.open { opacity: 1; pointer-events: all; }
.cert-modal {
background: var(--surface);
border: 1px solid var(--border2);
border-radius: var(--radius);
max-width: 560px;
width: 100%;
padding: 2rem;
position: relative;
transform: scale(0.94) translateY(20px);
transition: transform var(--transition);
max-height: 90vh;
overflow-y: auto;
}
.cert-modal-overlay.open .cert-modal { transform: scale(1) translateY(0); }
.cert-modal-close {
position: absolute;
top: 1rem; right: 1rem;
width: 32px; height: 32px;
border: 1px solid var(--border);
border-radius: var(--radius-sm);
background: transparent;
color: var(--text2);
cursor: pointer;
display: flex; align-items: center; justify-content: center;
font-size: 1rem;
transition: all var(--transition);
}
.cert-modal-close:hover { border-color: var(--accent); color: var(--accent); }
.cert-modal-banner {
height: 140px;
border-radius: var(--radius-sm);
display: flex; align-items: center; justify-content: center;
font-size: 4rem;
margin-bottom: 1.5rem;
overflow: hidden;
position: relative;
background: var(--surface2);
}
.cert-modal-banner::before {
content: '';
position: absolute;
inset: 0;
background-image:
    linear-gradient(rgba(129,140,248,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(129,140,248,0.07) 1px, transparent 1px);
background-size: 28px 28px;
}
.cert-modal-banner span { position: relative; z-index: 1; filter: drop-shadow(0 0 20px currentColor); font-size: 4rem; }
.cert-modal-banner img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.cert-modal-banner.ci-python   { background: linear-gradient(145deg, #0e1130, #1e2260, #2a1a50); }
.cert-modal-banner.ci-web      { background: linear-gradient(145deg, #0a1528, #112244, #1a2f60); }
.cert-modal-banner.ci-linux    { background: linear-gradient(145deg, #120d28, #1e1245, #2d1b5e); }
.cert-modal-banner.ci-network  { background: linear-gradient(145deg, #0a1520, #122035, #1a3050); }
.cert-modal-banner.ci-db       { background: linear-gradient(145deg, #0f0e28, #1a1848, #281e62); }
.cert-modal-banner.ci-security { background: linear-gradient(145deg, #130820, #220e40, #3d1a6b); }
.cert-modal-banner.ci-cloud    { background: linear-gradient(145deg, #081420, #0f2040, #1a3265); }
.cert-modal-banner.ci-php      { background: linear-gradient(145deg, #100c28, #1c1048, #3b2068); }
.cert-modal-issuer { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); letter-spacing: 0.1em; margin-bottom: 0.5rem; }
.cert-modal-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 800; margin-bottom: 0.75rem; line-height: 1.3; }
.cert-modal-desc { font-size: 0.9rem; color: var(--text2); line-height: 1.75; margin-bottom: 1.25rem; }
.cert-modal-meta { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.5rem; }
.cert-modal-row { display: flex; gap: 0.75rem; align-items: center; font-size: 0.85rem; }
.cert-modal-row strong { color: var(--text3); font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; min-width: 80px; }
.cert-modal-skills { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 1rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
.hero-float { display: none; }
.about-grid { grid-template-columns: 1fr; }
.contact-wrapper { grid-template-columns: 1fr; }
.form-row { grid-template-columns: 1fr; }
}
.cert-grid { grid-template-columns: 1fr; }
.cert-stats { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 720px) {
.nav-links { display: none; }
.hamburger { display: flex; }
.hero { padding-top: 90px; }
.hero-title { font-size: clamp(2rem, 10vw, 2.8rem); }
.projects-grid { grid-template-columns: 1fr; }
.skills-grid { grid-template-columns: 1fr; }
.cert-stats { grid-template-columns: 1fr; }
footer { flex-direction: column; text-align: center; }
}