/* ============================================
   HIMANSHU RATHI PORTFOLIO - style.css
   ============================================ */

:root {
    --primary: #00adb5;
    --primary-dark: #007a80;
    --primary-glow: rgba(0, 173, 181, 0.25);
    --dark: #0d0d0d;
    --dark-2: #111111;
    --dark-3: #161616;
    --dark-4: #1a1a1a;
    --dark-5: #222222;
    --text-white: #eeeeee;
    --text-gray: #aaaaaa;
    --text-muted: #666666;
    --border: rgba(255, 255, 255, 0.08);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.25s ease;
    --font: 'Segoe UI', Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background-color: var(--dark);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   STATUS DOT
   ============================================ */
.status-dot {
    display: inline-block;
    width: 8px; height: 8px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 6px #22c55e;
    animation: pulse-dot 2s infinite;
}
.status-dot.small { width: 7px; height: 7px; }
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

#typing.cursor-done::after {
    content: '|';
    animation: blink-caret 0.8s step-end infinite;
    margin-left: 2px;
    color: var(--primary);
}
@keyframes blink-caret {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ============================================
   NAVBAR
   ============================================ */
header {
    background: rgba(13, 13, 13, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 14px 50px;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    transition: padding var(--transition);
}
header.scrolled { padding: 10px 50px; }

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1200px;
    margin: auto;
}

.logo {
    color: var(--text-white);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
}
.logo span { color: var(--primary); }

nav ul {
    display: flex;
    gap: 6px;
    list-style: none;
    align-items: center;
}

nav a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
    cursor: pointer;
}
nav a:hover { color: var(--primary); background: rgba(0,173,181,0.08); }

.nav-resume-btn {
    background: var(--primary) !important;
    color: var(--dark) !important;
    font-weight: 600 !important;
    padding: 7px 14px !important;
    border-radius: var(--radius-sm) !important;
    font-size: 0.78rem !important;
}
.nav-resume-btn:hover {
    background: var(--primary-dark) !important;
    color: #fff !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 22px; height: 2px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    background: var(--dark-2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 20px 40px;
    position: relative;
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,173,181,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,173,181,0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    opacity: 0.6;
    z-index: 1;
}

#particles-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    position: relative;
    z-index: 2;
    animation: heroFade 1s ease-out;
}

@keyframes heroFade {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-gray);
    background: rgba(34,197,94,0.1);
    border: 1px solid rgba(34,197,94,0.2);
    padding: 6px 14px;
    border-radius: 50px;
}

.profile-pic {
    width: 130px; height: 130px;
    border-radius: 50%;
    border: 3px solid var(--primary);
    box-shadow: 0 0 30px var(--primary-glow);
    object-fit: cover;
    margin-top: 8px;
}

#typing {
    font-size: 2.4rem;
    color: var(--primary);
    min-height: 1.3em;
    letter-spacing: 1px;
}

.tagline {
    font-size: 1.15rem;
    color: var(--text-gray);
    max-width: 500px;
}
.accent { color: var(--primary); font-weight: 600; }

.hero-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 8px;
}

.hero-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 8px;
}
.hero-stack span {
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 50px;
    background: rgba(0,173,181,0.08);
    border: 1px solid rgba(0,173,181,0.2);
    color: var(--primary);
    letter-spacing: 0.3px;
}

/* ============================================
   STATS ROW
   ============================================ */
.hero-stats {
    display: flex;
    gap: 32px;
    justify-content: center;
    margin-top: 20px;
    flex-wrap: wrap;
}
.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    min-width: 90px;
}
.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}
.stat-number::after {
    content: '+';
    color: var(--primary);
}
.stat-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

@media (max-width: 768px) {
    .hero-stats { gap: 20px; }
    .stat-number { font-size: 1.4rem; }
    .stat-item { min-width: 70px; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    letter-spacing: 0.3px;
}
.btn-primary {
    background: var(--primary);
    color: var(--dark);
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); }

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: var(--dark); transform: translateY(-2px); }

.btn-project {
    background: transparent;
    color: var(--primary);
    border: 1px solid rgba(0,173,181,0.3);
    padding: 8px 18px;
    font-size: 0.82rem;
    margin-top: 14px;
}
.btn-project:hover { background: var(--primary); color: var(--dark); }

/* ============================================
   SECTIONS - BASE
   ============================================ */
.section {
    padding: 90px 8%;
    max-width: 1100px;
    margin: auto;
    box-sizing: border-box;
}
.content-section { display: none; }

.section-enter {
    animation: sectionFadeIn 0.45s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}
.gray {
    background: var(--dark-3);
    border-radius: var(--radius-lg);
    max-width: 100%;
    padding: 90px 10%;
}

.section-title {
    font-size: 1.9rem;
    text-align: center;
    margin-bottom: 12px;
    position: relative;
    font-weight: 700;
}
.section-title::after {
    content: '';
    display: block;
    width: 44px; height: 3px;
    background: var(--primary);
    border-radius: 2px;
    margin: 10px auto 0;
}
.section-sub {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 44px;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    align-items: start;
    margin-top: 40px;
}

.about-photo {
    width: 100%;
    border-radius: var(--radius-md);
    border: 2px solid var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
    object-fit: cover;
    aspect-ratio: 1;
}

.about-quick-facts {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.fact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.82rem;
    color: var(--text-gray);
}
.fact-item i { color: var(--primary); width: 14px; }

.about-text-col { display: flex; flex-direction: column; gap: 14px; }
.about-intro {
    font-size: 1.05rem;
    color: var(--text-white);
    font-weight: 500;
    line-height: 1.7;
}
.about-text-col p {
    color: var(--text-gray);
    line-height: 1.8;
    font-size: 0.95rem;
}
.about-text-col strong { color: var(--primary); font-weight: 600; }

.currently-building {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    background: rgba(0,173,181,0.06);
    border: 1px solid rgba(0,173,181,0.15);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-top: 6px;
}
.cb-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
}
.cb-text { font-size: 0.82rem; color: var(--text-gray); line-height: 1.5; }

/* ============================================
   SKILLS
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.skill-group {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 22px;
}

.skill-group-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.skill-group-title i { color: var(--primary); }

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

.skill-tag {
    font-size: 0.78rem;
    padding: 5px 12px;
    border-radius: 50px;
    font-weight: 500;
    transition: transform var(--transition);
    cursor: default;
}
.skill-tag:hover { transform: translateY(-2px); }

.skill-tag.strong {
    background: rgba(0,173,181,0.15);
    color: var(--primary);
    border: 1px solid rgba(0,173,181,0.25);
}
.skill-tag.medium {
    background: rgba(255,255,255,0.05);
    color: var(--text-gray);
    border: 1px solid var(--border);
}
.skill-tag.learning {
    background: rgba(251,191,36,0.08);
    color: #f59e0b;
    border: 1px solid rgba(251,191,36,0.2);
}

.skill-legend {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 28px;
    flex-wrap: wrap;
}
.leg-item { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--text-muted); }

/* ============================================
   PROJECTS
   ============================================ */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 10px;
}

.project-card {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.project-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0,173,181,0.3);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
}
.project-card.featured {
    border-color: rgba(0,173,181,0.3);
    background: linear-gradient(135deg, #1a1a1a 0%, #111a1a 100%);
}

.project-badge {
    position: absolute;
    top: -1px; right: 20px;
    background: var(--primary);
    color: var(--dark);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 0 0 6px 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
}

.project-icon {
    width: 44px; height: 44px;
    background: rgba(0,173,181,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
}

.project-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}
.project-desc {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 14px;
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 4px;
}
.project-stack span {
    font-size: 0.7rem;
    padding: 3px 9px;
    background: var(--dark-5);
    border: 1px solid var(--border);
    color: var(--text-gray);
    border-radius: 50px;
}

.github-cta {
    text-align: center;
    margin-top: 40px;
    padding-top: 36px;
    border-top: 1px solid var(--border);
}
.github-cta p {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 14px;
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.cert-highlights {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin: 32px 0;
}

.cert-highlight-card {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-width: 110px;
    transition: border-color var(--transition);
}
.cert-highlight-card:hover { border-color: rgba(0,173,181,0.3); }
.cert-highlight-card i { color: var(--primary); font-size: 1.3rem; }
.cert-count { font-size: 1.6rem; font-weight: 700; color: var(--text-white); }
.cert-org { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

.cert-accordion { display: flex; flex-direction: column; gap: 10px; }

.cert-category { background: var(--dark-4); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }

.cert-toggle {
    width: 100%;
    padding: 16px 20px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background var(--transition);
}
.cert-toggle:hover { background: rgba(255,255,255,0.03); }
.cert-toggle span { display: flex; align-items: center; gap: 10px; }

.cert-org-icon { font-size: 0.6rem !important; }
.cert-org-icon.ibm    { color: #006699; }
.cert-org-icon.anthropic { color: var(--primary); }
.cert-org-icon.cisco  { color: #1ba0d7; }
.cert-org-icon.hackathon { color: #f59e0b; }

.cert-chevron { transition: transform 0.3s ease; color: var(--text-muted); font-size: 0.75rem; }
.cert-toggle.open .cert-chevron { transform: rotate(180deg); }

.cert-list {
    display: none;
    padding: 4px 20px 16px;
    border-top: 1px solid var(--border);
}
.cert-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-gray);
    text-decoration: none;
    padding: 9px 0;
    font-size: 0.88rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: color var(--transition), gap var(--transition);
}
.cert-list a:last-child { border-bottom: none; }
.cert-list a:hover { color: var(--primary); gap: 14px; }
.cert-list a i { color: var(--primary); font-size: 0.85rem; width: 14px; }

/* ============================================
   TIMELINE (ACADEMICS)
   ============================================ */
.timeline {
    max-width: 580px;
    margin: 40px auto 0;
    position: relative;
    padding-left: 28px;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 7px; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.timeline-dot {
    position: absolute;
    left: -24px;
    top: 14px;
    width: 14px; height: 14px;
    background: var(--dark-4);
    border: 2px solid var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
    transition: background var(--transition);
}
.timeline-dot.active {
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary-glow);
}

.timeline-content {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    flex: 1;
    transition: border-color var(--transition);
}
.timeline-content:hover { border-color: rgba(0,173,181,0.2); }

.timeline-year {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}
.timeline-content h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.timeline-content p { font-size: 0.85rem; color: var(--text-gray); }

.timeline-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 8px;
}
.timeline-badge.current {
    background: rgba(0,173,181,0.15);
    color: var(--primary);
    border: 1px solid rgba(0,173,181,0.25);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 8px;
}

.contact-card {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all var(--transition);
    text-align: center;
}
.contact-card:hover {
    border-color: rgba(0,173,181,0.35);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}
.contact-card i { font-size: 1.6rem; color: var(--primary); }
.contact-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text-muted); }
.contact-value { font-size: 0.82rem; color: var(--text-gray); word-break: break-all; }

/* ============================================
   FOOTER
   ============================================ */
footer {
    text-align: center;
    padding: 32px 20px;
    color: var(--text-muted);
    font-size: 0.82rem;
    border-top: 1px solid var(--border);
    line-height: 1.8;
}
footer .footer-sub { font-size: 0.75rem; }

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 42px; height: 42px;
    background: var(--primary);
    color: var(--dark);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.9rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
    z-index: 999;
    box-shadow: 0 4px 14px var(--primary-glow);
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { transform: translateY(-3px); }

/* ============================================
   SCROLL PROGRESS BAR
   ============================================ */
.scroll-progress {
    position: fixed; top: 0; left: 0;
    height: 3px; width: 0%;
    background: linear-gradient(90deg, var(--primary), #22c55e);
    z-index: 1001;
    transition: width 0.1s linear;
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */
@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; }
    .about-photo-col { display: flex; flex-direction: column; align-items: center; }
    .about-photo { width: 160px; height: 160px; border-radius: 50%; }
    .about-quick-facts { flex-direction: row; flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 768px) {
    header { padding: 12px 20px; }

    .nav-toggle { display: flex; }

    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: rgba(13,13,13,0.98);
        flex-direction: column;
        padding: 16px 20px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
    }
    nav ul.open { display: flex; }
    nav ul li { width: 100%; }
    nav a { display: block; padding: 10px 14px; font-size: 0.85rem; }
    .nav-resume-btn { text-align: center; }

    .section { padding: 70px 5%; }
    .gray { padding: 70px 6%; border-radius: var(--radius-md); }

    #typing { font-size: 1.6rem; }
    .tagline { font-size: 0.95rem; }
    .hero-cta { flex-direction: column; align-items: center; }

    .project-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr 1fr; }
    .cert-highlights { gap: 10px; }
    .cert-highlight-card { min-width: 90px; padding: 16px 20px; }

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

    .back-to-top { bottom: 18px; right: 18px; width: 38px; height: 38px; }
}

@media (max-width: 480px) {
    .contact-grid { grid-template-columns: 1fr; }
    .cert-highlights { flex-wrap: wrap; }
}

/* ============================================
   PROJECT THUMBNAILS
   ============================================ */
.project-thumb {
    width: 100%;
    height: 140px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: rgba(255,255,255,0.8);
    margin: -24px -24px 16px -24px;
    width: calc(100% + 48px);
}
.project-body {
    display: flex;
    flex-direction: column;
    flex: 1;
}
.project-card.featured .project-thumb {
    border-bottom: 2px solid rgba(0,173,181,0.3);
}

/* ============================================
   LIGHTBOX
   ============================================ */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    align-items: center;
    justify-content: center;
    padding: 40px;
}
.lightbox.open {
    display: flex;
}
.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    border-radius: var(--radius-sm);
    box-shadow: 0 0 40px rgba(0,0,0,0.5);
}
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition);
}
.lightbox-close:hover {
    opacity: 1;
}

/* ============================================
   EXPERIENCE
   ============================================ */
.exp-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 36px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.exp-card {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}
.exp-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,173,181,0.3);
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}
.exp-card.featured {
    border-color: rgba(0,173,181,0.3);
    background: linear-gradient(135deg, #1a1a1a 0%, #111a1a 100%);
}

.exp-badge {
    position: absolute;
    top: -1px; right: 20px;
    background: var(--primary);
    color: var(--dark);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 0 0 6px 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.exp-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 12px;
}

.exp-icon {
    width: 44px; height: 44px;
    background: rgba(0,173,181,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.exp-meta h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 2px;
}

.exp-company {
    font-size: 0.82rem;
    color: var(--text-gray);
    display: block;
}

.exp-date {
    font-size: 0.72rem;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}

.exp-desc {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 12px;
    padding-left: 60px;
}

.exp-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding-left: 60px;
}

.exp-tags span {
    font-size: 0.7rem;
    padding: 3px 9px;
    background: var(--dark-5);
    border: 1px solid var(--border);
    color: var(--text-gray);
    border-radius: 50px;
}

@media (max-width: 600px) {
    .exp-desc { padding-left: 0; }
    .exp-tags { padding-left: 0; }
}

/* ============================================
   CONTENT PORTFOLIO
   ============================================ */
.content-highlights {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.content-card {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 22px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-width: 140px;
    transition: border-color var(--transition), transform var(--transition);
    text-align: center;
    flex: 1;
    max-width: 180px;
}
.content-card:hover {
    border-color: rgba(0,173,181,0.3);
    transform: translateY(-4px);
}
.content-card i {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 6px;
}
.content-stat {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
}
.content-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
    line-height: 1.4;
}

/* ============================================
   MILESTONES
   ============================================ */
.milestone-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 36px;
}

.milestone-card {
    background: var(--dark-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.milestone-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0,173,181,0.3);
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}

.milestone-icon {
    width: 48px; height: 48px;
    background: rgba(0,173,181,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
    margin: 0 auto 12px;
}

.milestone-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}

.milestone-card p {
    font-size: 0.82rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ============================================
   PAGE LOADER
   ============================================ */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}
.page-loader.active {
    opacity: 1;
    pointer-events: all;
}
.loader-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--dark-4);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.scroll-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.scroll-visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ============================================
   SECTION TRANSITIONS
   ============================================ */
.content-section, #hero {
    transition: opacity 0.25s ease, transform 0.25s ease;
}
.content-section.active-section, #hero.active-section {
    transition: opacity 0.3s ease, transform 0.3s ease;
}