/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --bg: #0f172a;
    --bg-dark: #020617;
    --card: rgba(15, 23, 42, 0.82);
    --card-solid: #111827;
    --text: #ffffff;
    --muted: #94a3b8;
    --primary: #38bdf8;
    --primary-soft: rgba(56, 189, 248, 0.14);
    --line: rgba(255, 255, 255, 0.09);
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
    --radius: 24px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 32%),
        radial-gradient(circle at 85% 18%, rgba(14, 165, 233, 0.10), transparent 30%),
        var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
}

/* NAVBAR */
.site-header {
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(2, 6, 23, 0.72);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}

.navbar {
    width: min(1200px, calc(100% - 40px));
    min-height: 74px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.2px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), #0ea5e9);
    color: #020617;
    box-shadow: 0 12px 26px rgba(56, 189, 248, 0.25);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 26px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    transition: 0.25s ease;
}

.nav-menu a:hover {
    color: var(--primary);
}

.nav-menu .nav-cta {
    color: #020617;
    background: var(--primary);
    padding: 10px 16px;
    border-radius: 999px;
    box-shadow: 0 12px 28px rgba(56, 189, 248, 0.24);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.85);
    color: var(--text);
    font-size: 18px;
    cursor: pointer;
}

/* GLOBAL LAYOUT */
.hero,
.otwit-spotlight,
.section,
.contact-section {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
}

.section,
.contact-section {
    padding: 90px 0;
}

.section-heading {
    max-width: 720px;
    margin-bottom: 34px;
}

.section-heading h2,
.spotlight-content h2,
.contact-box h2 {
    font-size: clamp(30px, 4vw, 44px);
    line-height: 1.12;
    letter-spacing: -0.9px;
}

.section-heading p,
.spotlight-content p,
.contact-box p,
.hero p {
    color: var(--muted);
    line-height: 1.8;
}

.section-label,
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(56, 189, 248, 0.22);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.35px;
    text-transform: uppercase;
}

/* HERO */
.hero {
    min-height: calc(100vh - 74px);
    padding: 82px 0 70px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 64px;
}

.hero-content {
    max-width: 650px;
}

.hero h1 {
    font-size: clamp(42px, 7vw, 76px);
    line-height: 0.98;
    letter-spacing: -2.4px;
    margin-bottom: 16px;
}

.hero h2 {
    font-size: clamp(22px, 3vw, 32px);
    color: var(--primary);
    margin-bottom: 22px;
    font-weight: 800;
}

.skills {
    margin: 28px 0;
    list-style: none;
    display: grid;
    gap: 12px;
}

.skills li {
    color: #cbd5e1;
    display: flex;
    align-items: center;
    gap: 12px;
}

.skills i {
    width: 28px;
    height: 28px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: var(--primary-soft);
    color: var(--primary);
}

.buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 20px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 800;
    transition: 0.25s ease;
}

.btn-primary {
    background: var(--primary);
    color: #020617;
    box-shadow: 0 14px 30px rgba(56, 189, 248, 0.26);
}

.btn-secondary {
    border: 1px solid rgba(56, 189, 248, 0.36);
    color: var(--primary);
    background: rgba(15, 23, 42, 0.38);
}

.btn-large {
    padding: 15px 22px;
}

.btn-primary:hover,
.btn-secondary:hover {
    transform: translateY(-3px);
}

.hero-image,
.spotlight-card {
    position: relative;
}

.hero-image img {
    width: min(420px, 100%);
    margin-left: auto;
    border-radius: 30px;
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
    transition: transform 0.35s ease;
}

.hero-image img:hover,
.spotlight-card:hover img {
    transform: translateY(-8px) scale(1.01);
}

.hero-image::before {
    content: "";
    position: absolute;
    width: 330px;
    height: 330px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.62), transparent 70%);
    top: 52%;
    left: 55%;
    transform: translate(-50%, -50%);
    filter: blur(65px);
    z-index: -1;
}

/* OTWIT SPOTLIGHT */
.otwit-spotlight {
    margin-top: 24px;
    padding: 44px;
    border: 1px solid rgba(56, 189, 248, 0.24);
    border-radius: 34px;
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    align-items: center;
    gap: 42px;
    background:
        linear-gradient(135deg, rgba(14, 165, 233, 0.16), rgba(15, 23, 42, 0.84)),
        rgba(2, 6, 23, 0.76);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.spotlight-content h2 {
    margin-bottom: 18px;
}

.spotlight-points {
    margin: 28px 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.spotlight-points div {
    background: rgba(2, 6, 23, 0.52);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
}

.spotlight-points i,
.card-icon {
    width: 46px;
    height: 46px;
    border-radius: 15px;
    display: grid;
    place-items: center;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 19px;
    margin-bottom: 14px;
}

.spotlight-points strong {
    display: block;
    margin-bottom: 8px;
}

.spotlight-points span {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.spotlight-card img {
    width: 100%;
    border-radius: 28px;
    border: 1px solid var(--line);
    box-shadow: 0 22px 50px rgba(0, 0, 0, 0.34);
    transition: 0.35s ease;
}

.floating-badge {
    position: absolute;
    left: 22px;
    bottom: 22px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 999px;
    color: #020617;
    background: var(--primary);
    font-weight: 900;
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.25);
}

/* VIBESCO DIGITAL — same layout language as OTWIT, violet accent instead of sky-blue */
.vibesco-spotlight {
    --primary: #a78bfa;
    --primary-soft: rgba(167, 139, 250, 0.14);
    margin-top: 24px;
    border-color: rgba(167, 139, 250, 0.24);
    background:
        linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(15, 23, 42, 0.84)),
        rgba(2, 6, 23, 0.76);
}

.vibesco-mock {
    width: 100%;
    border-radius: 28px;
    border: 1px solid var(--line);
    box-shadow: 0 22px 50px rgba(0, 0, 0, 0.34);
    display: block;
}

/* TIMELINE & CARDS */
.timeline,
.experience-grid,
.project-grid,
.certificate-grid {
    display: grid;
    gap: 22px;
}

.timeline {
    grid-template-columns: repeat(3, 1fr);
}

.experience-grid,
.project-grid,
.certificate-grid {
    grid-template-columns: repeat(3, 1fr);
}

.timeline-card,
.experience-card,
.project-card,
.certificate-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px;
    transition: 0.28s ease;
    backdrop-filter: blur(12px);
}

.timeline-card:hover,
.experience-card:hover,
.project-card:hover,
.certificate-card:hover {
    transform: translateY(-8px);
    border-color: rgba(56, 189, 248, 0.6);
    box-shadow: 0 20px 44px rgba(0, 0, 0, 0.22);
}

.timeline-year {
    display: inline-block;
    color: var(--primary);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.timeline-card h3,
.experience-card h3,
.project-card h3,
.certificate-card h3 {
    margin-bottom: 12px;
    font-size: 21px;
}

.timeline-card p,
.experience-card p,
.project-card p,
.certificate-card p {
    color: var(--muted);
    line-height: 1.72;
    font-size: 15px;
}

.experience-card span,
.project-card span,
.certificate-card span {
    display: inline-block;
    margin-top: 18px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

.featured-card {
    grid-column: span 1;
    background: linear-gradient(145deg, rgba(56, 189, 248, 0.14), rgba(15, 23, 42, 0.78));
}

.alt-section {
    padding-top: 100px;
    padding-bottom: 100px;
}

.certificate-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: var(--primary-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 18px;
}

.certificate-card a {
    display: inline-block;
    margin-top: 14px;
    text-decoration: none;
    color: var(--text);
    border-bottom: 1px solid rgba(255, 255, 255, 0.24);
    padding-bottom: 4px;
    font-weight: 700;
    transition: 0.25s ease;
}

.certificate-card a:hover {
    color: var(--primary);
    border-color: var(--primary);
}

/* CONTACT */
.contact-box {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.95));
    border: 1px solid rgba(56, 189, 248, 0.16);
    border-radius: 30px;
    padding: 46px;
    text-align: center;
    box-shadow: var(--shadow);
}

.contact-box p {
    max-width: 720px;
    margin: 16px auto 28px;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 15px 28px;
    border-radius: 999px;
    background: #25D366;
    color: white;
    text-decoration: none;
    font-weight: 900;
    transition: 0.25s ease;
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.25);
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(37, 211, 102, 0.35);
}

/* FOOTER */
.footer {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
    padding: 34px 0;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--muted);
    font-size: 14px;
}

.footer .socials {
    display: flex;
    gap: 18px;
}

.footer .socials a {
    color: var(--muted);
    font-size: 19px;
    transition: 0.25s ease;
}

.footer .socials a:hover {
    color: var(--primary);
    transform: translateY(-3px);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero,
    .otwit-spotlight {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 54px;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

    .skills li,
    .buttons {
        justify-content: center;
    }

    .hero-image img {
        margin: 0 auto;
        width: min(360px, 86vw);
    }

    .spotlight-points,
    .timeline,
    .experience-grid,
    .project-grid,
    .certificate-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar,
    .hero,
    .otwit-spotlight,
    .section,
    .contact-section,
    .footer {
        width: min(100% - 28px, 1200px);
    }

    .menu-toggle {
        display: grid;
        place-items: center;
    }

    .nav-menu {
        position: absolute;
        top: 74px;
        left: 14px;
        right: 14px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 12px;
        background: rgba(2, 6, 23, 0.97);
        border: 1px solid var(--line);
        border-radius: 20px;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 14px 16px;
        border-radius: 14px;
    }

    .nav-menu a:hover {
        background: rgba(56, 189, 248, 0.08);
    }

    .nav-menu .nav-cta {
        text-align: center;
        margin-top: 8px;
    }

    .hero {
        min-height: auto;
        padding: 44px 0 46px;
    }

    .hero h1 {
        letter-spacing: -1.4px;
    }

    .otwit-spotlight {
        padding: 26px;
        border-radius: 26px;
    }

    .section,
    .contact-section {
        padding: 64px 0;
    }

    .spotlight-points,
    .timeline,
    .experience-grid,
    .project-grid,
    .certificate-grid {
        grid-template-columns: 1fr;
    }

    .spotlight-buttons .btn-primary,
    .spotlight-buttons .btn-secondary,
    .contact-btn,
    .buttons a {
        width: 100%;
    }

    .floating-badge {
        left: 16px;
        bottom: 16px;
        font-size: 13px;
    }

    .contact-box {
        padding: 32px 20px;
    }

    .footer {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 420px) {
    .brand span:last-child {
        display: none;
    }

    .hero-image::before {
        width: 240px;
        height: 240px;
    }

    .otwit-spotlight {
        padding: 20px;
    }

    .timeline-card,
    .experience-card,
    .project-card,
    .certificate-card {
        padding: 22px;
    }
}