:root {
    --bg: #09090b;
    --bg-elevated: #111113;
    --bg-card: #18181b;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    --text: #fafafa;
    --text-muted: #a1a1aa;
    --text-subtle: #71717a;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.35);
    --green: #22c55e;
    --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.page { position: relative; z-index: 1; }
.container { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

.nav {
    position: sticky; top: 0; z-index: 100;
    border-bottom: 1px solid var(--border);
    background: rgba(9, 9, 11, 0.75);
    backdrop-filter: blur(16px);
}

.nav-inner {
    display: flex; align-items: center; justify-content: space-between; height: 56px;
}

.nav-logo { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; color: var(--text); text-decoration: none; }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a { font-size: 13px; color: var(--text-muted); text-decoration: none; }
.nav-links a:hover { color: var(--text); }

.back-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px; color: var(--text-muted); text-decoration: none;
    margin-bottom: 32px;
}
.back-link:hover { color: var(--accent); }

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 16px; font-size: 13px; font-weight: 500;
    border-radius: 8px; text-decoration: none; border: none;
}

.btn-primary {
    background: var(--text); color: var(--bg);
    transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.btn-primary:hover {
    background: var(--accent); color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 24px var(--accent-glow);
}

section { padding: 72px 0; }

.section-label {
    font-size: 11px; font-weight: 500; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--accent); margin-bottom: 10px;
}

.section-title {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 600; letter-spacing: -0.03em; margin-bottom: 36px;
}

/* Glow cards */
.glow-card::before {
    content: '';
    position: absolute; inset: 0; opacity: 0;
    transition: opacity 0.3s; pointer-events: none; z-index: 0;
}

.glow-card:hover::before { opacity: 1; }
.glow-card > * { position: relative; z-index: 1; }

.glow-card {
    position: relative; overflow: hidden;
    transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.glow-card:hover {
    transform: translateY(-3px) scale(1.008);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.glow-blue::before {
    background: radial-gradient(500px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--accent-glow), transparent 40%);
}
.glow-purple::before {
    background: radial-gradient(500px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(139, 92, 246, 0.25), transparent 40%);
}
.glow-green::before {
    background: radial-gradient(500px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(34, 197, 94, 0.2), transparent 40%);
}
.glow-orange::before {
    background: radial-gradient(500px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(249, 115, 22, 0.2), transparent 40%);
}

.glow-blue:hover { border-color: rgba(59, 130, 246, 0.45); }
.glow-purple:hover { border-color: rgba(139, 92, 246, 0.45); }
.glow-green:hover { border-color: rgba(34, 197, 94, 0.4); }
.glow-orange:hover { border-color: rgba(249, 115, 22, 0.4); }

.card-tag {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 11px; font-weight: 500; letter-spacing: 0.05em;
    text-transform: uppercase; color: var(--text-subtle); margin-bottom: 12px;
}
.card-tag i { width: 13px; height: 13px; }

.card-title {
    font-size: 19px; font-weight: 700; letter-spacing: -0.025em;
    margin-bottom: 8px; color: var(--text);
}

.card-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; flex: 1; }

.card-preview {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 14px;
    border: 1px solid var(--border);
}

.card-link {
    margin-top: 16px; font-size: 12px; font-weight: 500; color: var(--accent);
    display: inline-flex; align-items: center; gap: 4px;
}

.card-skills {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-top: 14px;
}

.card-skills .skill-tag {
    font-size: 11px;
    padding: 4px 10px;
}

a.bento-card .card-link { margin-top: auto; padding-top: 16px; }

.card-metric {
    margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border);
    display: flex; align-items: baseline; gap: 8px;
}

.card-metric-value {
    font-size: 26px; font-weight: 600; letter-spacing: -0.03em; color: var(--accent);
}

.card-metric-label { font-size: 12px; color: var(--text-subtle); }

/* Hero */
.hero { padding: 88px 0 72px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 5px 12px; border-radius: 999px;
    border: 1px solid var(--border); background: var(--bg-elevated);
    font-size: 12px; color: var(--text-muted); margin-bottom: 28px;
}

.hero-badge-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--green); box-shadow: 0 0 8px var(--green);
}

.hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 600; letter-spacing: -0.04em; line-height: 1.08;
    margin-bottom: 12px;
    white-space: nowrap;
}

@media (max-width: 640px) {
    .hero h1 { white-space: normal; }
}

.hero-timeline-desc {
    font-size: 15px; color: var(--text-muted);
    max-width: 480px; margin: 0 auto 8px;
    text-align: center;
}

.hero .container > .hero-badge,
.hero .container > h1,
.hero .container > .hero-timeline-desc {
    text-align: center;
}

.hero .container > .hero-badge { margin-left: auto; margin-right: auto; }

/* Milestone timeline */
.milestone-timeline {
    position: relative;
    max-width: 640px;
    margin: 40px auto 0;
    padding-left: 88px;
}

.milestone-timeline::before {
    content: '';
    position: absolute;
    left: 76px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), rgba(59, 130, 246, 0.2), var(--green), var(--border));
}

.milestone-item {
    position: relative;
    padding-bottom: 20px;
}

.milestone-item:last-child { padding-bottom: 0; }

.milestone-year {
    position: absolute;
    left: -88px;
    top: 22px;
    width: 64px;
    text-align: right;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-subtle);
}

.milestone-dot {
    position: absolute;
    left: -16px;
    top: 24px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--accent);
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
}

.milestone-dot-featured {
    border-color: var(--accent);
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

.milestone-dot-current {
    border-color: var(--green);
    background: var(--green);
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.4);
}

.milestone-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
}

.milestone-featured {
    border-color: rgba(59, 130, 246, 0.35);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, var(--bg-card) 55%);
}

.milestone-type {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.type-edu {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

.type-career {
    background: rgba(34, 197, 94, 0.12);
    color: #86efac;
}

.milestone-title {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 2px;
}

.milestone-subtitle {
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 6px;
}

.milestone-detail {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Bento */
.bento {
    display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px;
}

.bento-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    display: flex; flex-direction: column;
}

a.bento-card { text-decoration: none; color: inherit; cursor: pointer; }

.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.span-12 { grid-column: span 12; }

/* Services */
.services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}

.service-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    text-decoration: none; color: inherit; display: flex; flex-direction: column;
}

.service-card:hover { color: inherit; }

.service-price {
    font-size: 22px; font-weight: 600; letter-spacing: -0.03em; margin: 12px 0 4px;
}

.service-meta {
    font-size: 11px; color: var(--text-subtle);
    text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 14px;
}

.service-list {
    list-style: none; font-size: 13px; color: var(--text-muted);
    margin-bottom: 20px; flex: 1;
}

.service-list li { padding: 6px 0; border-bottom: 1px solid var(--border); }
.service-list li:last-child { border-bottom: none; }

.service-cta {
    font-size: 13px; font-weight: 500; color: var(--accent);
    display: inline-flex; align-items: center; gap: 6px;
}

.services-note { font-size: 13px; color: var(--text-subtle); margin-top: 16px; }

/* Timeline */
.timeline { position: relative; padding-left: 28px; }

.timeline::before {
    content: ''; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 1px;
    background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item { position: relative; padding-bottom: 28px; }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
    position: absolute; left: -28px; top: 5px;
    width: 13px; height: 13px; border-radius: 50%;
    background: var(--bg); border: 2px solid var(--accent);
}

.timeline-head {
    display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; margin-bottom: 6px;
}

.timeline-role { font-size: 16px; font-weight: 700; letter-spacing: -0.02em; }
.timeline-org { font-size: 14px; font-weight: 600; color: var(--text); }
.timeline-meta { font-size: 12px; color: var(--text-subtle); }

.edu-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
    margin-bottom: 0;
}

.edu-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
}

.edu-card.featured {
    border-color: rgba(59, 130, 246, 0.35);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, var(--bg-card) 60%);
}

.edu-level {
    display: inline-block;
    font-size: 11px; font-weight: 700; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--accent);
    margin-bottom: 8px;
}

.edu-school {
    font-size: 17px; font-weight: 700; letter-spacing: -0.02em;
    color: var(--text); margin-bottom: 4px;
}

.edu-degree {
    font-size: 14px; color: var(--text-muted); margin-bottom: 8px; line-height: 1.5;
}

.edu-date {
    font-size: 12px; color: var(--text-subtle);
}

/* Certifications */
.certs-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}

.cert-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 20px 22px;
    display: flex; flex-direction: column; gap: 6px;
}

.cert-card:hover { border-color: var(--border-hover); }

.cert-issuer {
    font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--accent);
}

.cert-name {
    font-size: 14px; font-weight: 600; color: var(--text); line-height: 1.4;
}

.edu-inline {
    font-size: 13px; color: var(--text-muted);
    margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--border);
}

.edu-inline strong { color: var(--text); font-weight: 500; }

/* Skills */
.skills-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
}

.skill-group {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 22px 24px;
}

.skill-group h4 {
    font-size: 12px; font-weight: 600; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--text); margin-bottom: 14px;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.skill-tag {
    font-size: 12px; padding: 6px 12px; border-radius: 8px;
    background: rgba(255,255,255,0.04); border: 1px solid var(--border);
    color: var(--text-muted);
}

.skill-group-wide { grid-column: 1 / -1; }

.cert-badge {
    font-size: 11px; padding: 6px 12px; border-radius: 999px;
    border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-subtle);
}

/* Case study pages */
.case-page { padding: 64px 0 80px; }

.case-page h1 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700; letter-spacing: -0.03em; margin-bottom: 12px;
}

.case-highlight {
    font-size: 15px; font-weight: 600; color: var(--accent); margin-bottom: 40px;
}

.case-block {
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--bg-elevated); padding: 32px; margin-bottom: 16px;
}

.case-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.case-col h4 {
    font-size: 11px; font-weight: 600; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--text-subtle); margin-bottom: 10px;
}

.case-col p, .case-col ul { font-size: 14px; color: var(--text-muted); line-height: 1.65; }
.case-col ul { list-style: none; }

.case-col li {
    padding-left: 14px; position: relative; margin-bottom: 6px;
}

.case-col li::before {
    content: '→'; position: absolute; left: 0; font-size: 10px; color: var(--accent);
}

.case-footer {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 16px; margin-top: 40px; padding-top: 24px;
    border-top: 1px solid var(--border);
}

.case-footer a {
    font-size: 13px; color: var(--accent); text-decoration: none; font-weight: 500;
}

.case-footer a:hover { text-decoration: underline; }

footer {
    border-top: 1px solid var(--border); padding: 32px 0; text-align: center;
}

footer p { font-size: 12px; color: var(--text-subtle); }

.reveal {
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 900px) {
    .milestone-timeline {
        padding-left: 0;
        max-width: 100%;
    }

    .milestone-timeline::before {
        left: 11px;
    }

    .milestone-year {
        position: static;
        display: block;
        width: auto;
        text-align: left;
        margin-bottom: 8px;
        top: auto;
        left: auto;
    }

    .milestone-dot {
        left: 5px;
        top: 36px;
    }

    .milestone-item {
        padding-left: 32px;
        padding-bottom: 28px;
    }

    .case-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .certs-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .bento { grid-template-columns: 1fr; }
    .span-7, .span-6, .span-5, .span-12 { grid-column: span 1; }
    .services-grid { grid-template-columns: 1fr; }
}