/* ==========================================
   CSS VARIABLES & GLOBAL SETTINGS
   ========================================== */
:root {
    --bg-dark: #0a0f1d;
    --bg-card: #131b2e;
    --bg-card-hover: #1a253e;
    --accent-blue: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.15);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Base font size */
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
}

/* ==========================================
   NAVIGATION BAR (Responsive)
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 14px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 15, 29, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: clamp(1.1rem, 4vw, 1.3rem);
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-blue);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: clamp(12px, 3vw, 28px);
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: clamp(0.8rem, 2.5vw, 0.95rem);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.btn-primary {
    background-color: var(--accent-blue);
    color: #000 !important;
    padding: 6px 14px;
    border-radius: 6px;
    font-weight: 600 !important;
    white-space: nowrap;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

/* Navbar mobile adjustments */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 12px;
    }
    .nav-links {
        gap: 10px;
    }
    .btn-primary {
        padding: 5px 10px;
    }
}

/* ==========================================
   HERO SECTION (Fluid & Responsive)
   ========================================== */
.hero {
    padding: clamp(90px, 15vh, 140px) 16px 50px;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: clamp(24px, 5vw, 60px);
}

@media (min-width: 768px) {
    .hero-container {
        flex-direction: row;
        text-align: left;
        align-items: center;
    }
}

.hero-image-wrapper {
    position: relative;
    flex-shrink: 0;
}

.hero-photo {
    width: clamp(140px, 35vw, 240px);
    height: clamp(140px, 35vw, 240px);
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-blue);
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.2);
}

.status-badge {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: clamp(0.65rem, 2vw, 0.75rem);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10b981;
}

.hero-content {
    width: 100%;
}

.greeting {
    color: var(--accent-blue);
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.hero-content h1 {
    font-size: clamp(1.6rem, 5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 8px;
    word-break: break-word;
}

.typing-text {
    font-size: clamp(0.95rem, 3vw, 1.2rem);
    color: var(--text-muted);
    font-weight: 400;
    min-height: 28px;
    margin-bottom: 16px;
}

.quote-card {
    background: var(--bg-card);
    border-left: 3px solid var(--accent-blue);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-muted);
    font-size: clamp(0.8rem, 2.5vw, 0.9rem);
    margin-bottom: 20px;
    text-align: left;
}

.quote-card cite {
    display: block;
    margin-top: 6px;
    font-style: normal;
    font-size: 0.8rem;
    color: var(--accent-blue);
}

.hero-cta {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .hero-cta {
        justify-content: flex-start;
    }
}

.btn-main, .btn-outline {
    padding: 10px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
    flex: 1 1 auto;
    max-width: 220px;
}

.btn-main {
    background: var(--accent-blue);
    color: #000;
}

.btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--accent-blue);
}

/* ==========================================
   MAIN CONTENT & SECTIONS
   ========================================== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

.section {
    padding: clamp(40px, 8vh, 60px) 0;
    border-top: 1px solid var(--border-color);
}

.section-title {
    font-size: clamp(1.3rem, 4vw, 1.6rem);
    margin-bottom: 24px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-blue);
    border-radius: 2px;
}

.text-center {
    text-align: center;
}

.text-center .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

.subtitle {
    color: var(--text-muted);
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    margin-bottom: 24px;
}

/* Grid Layouts (Full Flexible) */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 768px) {
    .grid-2-col {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: clamp(16px, 4vw, 24px);
    border-radius: 12px;
}

.info-card h3 {
    font-size: clamp(1rem, 3vw, 1.1rem);
    margin-bottom: 14px;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.info-list li {
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    word-break: break-word;
}

.info-list strong {
    color: var(--text-main);
}

/* Skills Grid (Adaptive) */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

@media (max-width: 480px) {
    .skills-grid {
        grid-template-columns: 1fr; /* 1 kolom penuh di HP layar kecil */
    }
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: clamp(16px, 3vw, 24px);
    border-radius: 12px;
    transition: var(--transition);
}

.skill-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    border-color: rgba(56, 189, 248, 0.3);
}

.skill-icon {
    font-size: clamp(1.5rem, 4vw, 1.8rem);
    color: var(--accent-blue);
    margin-bottom: 10px;
}

.skill-card h3 {
    font-size: clamp(0.95rem, 3vw, 1.1rem);
    margin-bottom: 6px;
}

.skill-card p {
    color: var(--text-muted);
    font-size: clamp(0.8rem, 2.5vw, 0.88rem);
}

/* Timeline (Mobile Friendly) */
.timeline {
    position: relative;
    padding-left: 16px;
    border-left: 2px solid var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 24px;
    padding-left: 16px;
}

.timeline-dot {
    position: absolute;
    left: -22px;
    top: 6px;
    width: 10px;
    height: 10px;
    background: var(--accent-blue);
    border-radius: 50%;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: clamp(14px, 3vw, 20px);
    border-radius: 10px;
}

.timeline-date {
    display: inline-block;
    background: var(--accent-glow);
    color: var(--accent-blue);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 6px;
}

.timeline-content h3 {
    font-size: clamp(0.95rem, 3vw, 1.1rem);
}

.school-major {
    color: var(--text-muted);
    font-size: clamp(0.8rem, 2.5vw, 0.9rem);
    margin-bottom: 10px;
}

.school-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-blue);
    text-decoration: none;
    font-size: clamp(0.78rem, 2.5vw, 0.85rem);
    margin-top: 6px;
    flex-wrap: wrap;
}

.school-logo {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

/* Social Buttons (Grid on mobile, flex on desktop) */
.social-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (min-width: 600px) {
    .social-links {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 8px;
    color: var(--text-main);
    text-decoration: none;
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
}

@media (min-width: 600px) {
    .social-btn {
        width: auto;
        padding: 12px 24px;
    }
}

.social-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-blue);
    transform: translateY(-3px);
}

.social-btn i {
    font-size: 1.1rem;
    color: var(--accent-blue);
}

/* ==========================================
   FOOTER
   ========================================== */
footer {
    border-top: 1px solid var(--border-color);
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: clamp(0.75rem, 2.5vw, 0.85rem);
}

.footer-subtext {
    margin-top: 4px;
    font-size: 0.75rem;
    opacity: 0.7;
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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