/* ============================================================
   Experience page — page header, timeline, education
   ============================================================ */

.page-header {
    padding: calc(var(--nav-height) + 72px) 0 24px;
    background-image:
        radial-gradient(ellipse 55% 60% at 50% 0%, rgba(34, 211, 238, 0.07), transparent 70%),
        radial-gradient(rgba(148, 163, 184, 0.1) 1px, transparent 1px);
    background-size: 100% 100%, 28px 28px;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.page-header p {
    max-width: 680px;
    color: var(--muted);
    margin-bottom: 24px;
}

.resume-btn {
    margin-bottom: 8px;
}

/* ---------- timeline ---------- */

.timeline-section {
    padding-top: 48px;
}

.timeline {
    position: relative;
    padding-left: 36px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), rgba(34, 211, 238, 0.08));
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -36px;
    top: 30px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg);
    border: 3px solid var(--accent);
    margin-left: 2px;
}

.timeline-marker.current {
    box-shadow: 0 0 0 5px rgba(34, 211, 238, 0.15), 0 0 14px rgba(34, 211, 238, 0.6);
    animation: pulseMarker 2.4s ease-in-out infinite;
}

@keyframes pulseMarker {
    0%, 100% { box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.12), 0 0 10px rgba(34, 211, 238, 0.45); }
    50%      { box-shadow: 0 0 0 8px rgba(34, 211, 238, 0.06), 0 0 18px rgba(34, 211, 238, 0.7); }
}

@media (prefers-reduced-motion: reduce) {
    .timeline-marker.current {
        animation: none;
    }
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent);
    display: inline-block;
    margin-bottom: 8px;
}

.timeline-card h3 {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 4px;
}

.timeline-company {
    font-size: 0.95rem;
    color: var(--muted);
    margin-bottom: 14px;
}

.timeline-company i {
    color: var(--accent);
    margin-right: 6px;
}

.timeline-points {
    list-style: none;
    margin-bottom: 18px;
}

.timeline-points li {
    position: relative;
    padding-left: 22px;
    color: var(--muted);
    font-size: 0.94rem;
    margin-bottom: 8px;
}

.timeline-points li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* ---------- education ---------- */

.education-section {
    padding-top: 24px;
}

.education-card {
    display: flex;
    gap: 22px;
    align-items: flex-start;
    max-width: 720px;
}

.education-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 54px;
    height: 54px;
    border-radius: 12px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 1.4rem;
}

.education-card h3 {
    font-size: 1.15rem;
    color: #fff;
    margin-bottom: 4px;
}

.education-card .timeline-company {
    margin-bottom: 10px;
}

.education-note {
    color: var(--muted);
    font-size: 0.92rem;
}

@media (max-width: 600px) {
    .timeline {
        padding-left: 28px;
    }

    .timeline-marker {
        left: -28px;
    }
}