/* =============================================
   Rahul Monde — profile site
   Modern dark, tech-forward
   ============================================= */

:root {
    --bg:           #0b0f17;
    --bg-2:         #0d1320;
    --surface:      #121826;
    --surface-2:    #161d2e;
    --line:         #1f2a44;
    --line-2:       #2a3858;
    --text:         #c9d1e0;
    --text-dim:     #8a96b2;
    --heading:      #f4f7ff;

    --primary:      #4cc9f0;
    --primary-2:    #4361ee;
    --accent:       #7209b7;
    --success:      #34d399;

    --grad-hero:    linear-gradient(135deg, #4cc9f0 0%, #4361ee 60%, #7209b7 100%);
    --grad-text:    linear-gradient(135deg, #4cc9f0 0%, #b5179e 100%);

    --radius:       14px;
    --radius-sm:    8px;
    --shadow:       0 10px 30px -12px rgba(0, 0, 0, 0.6);
    --shadow-lg:    0 30px 60px -20px rgba(0, 0, 0, 0.7);

    --container:    1100px;
}

/* Reset-ish */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--heading); }

/* Skip link */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--primary);
    color: #001;
    padding: 8px 12px;
    z-index: 1000;
    border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* =====================================================
   NAV
   ===================================================== */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(11, 15, 23, 0.75);
    border-bottom: 1px solid var(--line);
}
.nav-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--heading);
    font-weight: 600;
}
.brand-mark {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: var(--grad-hero);
    color: #fff;
    display: inline-grid;
    place-items: center;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 0.9rem;
}
.brand-name { font-size: 0.95rem; }
.nav-links {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    gap: 22px;
}
.nav-links a {
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color .2s ease;
}
.nav-links a:hover { color: var(--heading); }

@media (max-width: 720px) {
    .nav-links { display: none; }
}

/* =====================================================
   HERO
   ===================================================== */
.hero {
    position: relative;
    overflow: hidden;
    padding: 90px 24px 72px;
}
.hero-bg {
    position: absolute;
    inset: -10% -10% auto -10%;
    height: 600px;
    background:
        radial-gradient(circle at 20% 30%, rgba(76, 201, 240, 0.25), transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(114, 9, 183, 0.25), transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(67, 97, 238, 0.18), transparent 55%);
    filter: blur(60px);
    z-index: 0;
}
.hero-inner {
    position: relative;
    z-index: 1;
    max-width: var(--container);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 56px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 18px;
    padding: 6px 12px;
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.3);
    border-radius: 999px;
    color: var(--success);
    font-size: 0.82rem;
    font-weight: 500;
}
.dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%,100% { opacity: 1; transform: scale(1); }
    50%     { opacity: .55; transform: scale(0.85); }
}

.hero-text h1 {
    color: var(--heading);
    font-size: clamp(2rem, 4.4vw, 3.5rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin: 0 0 22px;
    font-weight: 700;
}
.grad {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.amp { color: var(--primary); font-weight: 400; font-style: italic; }

.lede {
    font-size: 1.08rem;
    color: var(--text);
    max-width: 56ch;
    margin: 0 0 32px;
}
.lede strong { color: var(--heading); }

.hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
    border: 1px solid transparent;
    text-decoration: none;
}
.btn-primary {
    background: var(--grad-hero);
    color: #fff;
    box-shadow: 0 10px 30px -12px rgba(67, 97, 238, 0.5);
}
.btn-primary:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 14px 34px -10px rgba(67, 97, 238, 0.7);
}
.btn-ghost {
    background: transparent;
    color: var(--heading);
    border-color: var(--line-2);
}
.btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.hero-stats {
    list-style: none;
    margin: 0; padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 580px;
}
.hero-stats li {
    display: flex;
    flex-direction: column;
    padding: 12px 14px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
}
.stat-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--heading);
    line-height: 1.1;
}
.stat-label {
    font-size: 0.78rem;
    color: var(--text-dim);
    margin-top: 2px;
}

/* hero card */
.hero-card {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    position: relative;
}
.hero-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 18px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(76,201,240,0.4), transparent 50%, rgba(114,9,183,0.4));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
}
.avatar {
    width: 140px;
    height: 140px;
    margin: 4px auto 18px;
}
.avatar svg { border-radius: 50%; box-shadow: 0 18px 40px -16px rgba(67,97,238,0.6); }

.avatar-photo {
    position: relative;
    border-radius: 50%;
    padding: 4px;
    background: var(--grad-hero);
    box-shadow: 0 18px 40px -16px rgba(67,97,238,0.6);
}
.avatar-photo img {
    width: 100%;
    height: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 50%;
    display: block;
    background: var(--surface);
}
.card-title {
    color: var(--heading);
    font-weight: 600;
    margin: 0 0 14px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
}
.chip-row {
    list-style: none;
    margin: 0 0 18px; padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}
.chip {
    background: rgba(76, 201, 240, 0.08);
    color: var(--primary);
    border: 1px solid rgba(76, 201, 240, 0.3);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 500;
}
.card-foot {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    font-size: 0.82rem;
    color: var(--text-dim);
    border-top: 1px solid var(--line);
    padding-top: 14px;
}
.card-foot strong { color: var(--heading); font-weight: 600; }
.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

@media (max-width: 880px) {
    .hero-inner { grid-template-columns: 1fr; gap: 36px; }
    .hero-card { max-width: 360px; margin: 0 auto; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================================
   SECTIONS
   ===================================================== */
.section {
    max-width: var(--container);
    margin: 0 auto;
    padding: 80px 24px;
    border-top: 1px solid var(--line);
}
.section:first-of-type { border-top: none; }

.section-head { margin-bottom: 40px; }
.section-kicker {
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary);
    font-size: 0.85rem;
    margin: 0 0 8px;
    letter-spacing: 0.05em;
}
.section-head h2 {
    color: var(--heading);
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    margin: 0 0 8px;
    letter-spacing: -0.01em;
    font-weight: 700;
}
.section-sub {
    color: var(--text-dim);
    margin: 0;
    max-width: 60ch;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 36px;
}
.about-copy p { margin: 0 0 16px; }
.about-copy strong { color: var(--heading); }
.about-side {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    height: fit-content;
}
.about-side h3 {
    color: var(--heading);
    margin: 0 0 14px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: 'JetBrains Mono', monospace;
}
.facts { margin: 0; }
.facts > div {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--line);
    font-size: 0.92rem;
}
.facts > div:last-child { border-bottom: none; }
.facts dt { color: var(--text-dim); margin: 0; }
.facts dd { margin: 0; color: var(--text); }

@media (max-width: 760px) {
    .about-grid { grid-template-columns: 1fr; }
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.skill-group {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
}
.skill-group h3 {
    margin: 0 0 18px;
    color: var(--heading);
    font-size: 1rem;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.04em;
}
.skill-list { list-style: none; margin: 0; padding: 0; }
.skill-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
}
.skill-row:last-child { border-bottom: none; }
.skill-name { color: var(--text); font-size: 0.95rem; }
.skill-dots { display: inline-flex; gap: 4px; }
.skill-dot {
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--line-2);
    transition: background .3s ease;
}
.skill-dot.active {
    background: var(--grad-hero);
    box-shadow: 0 0 6px rgba(67, 97, 238, 0.6);
}

@media (max-width: 760px) {
    .skills-grid { grid-template-columns: 1fr; }
}

/* Certifications */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
}
.cert-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.cert-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 18px 40px -22px rgba(67,97,238,0.6);
}
.cert-status-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 999px;
    letter-spacing: 0.04em;
}
.cert-active .cert-status-tag {
    color: var(--success);
    background: rgba(52, 211, 153, 0.1);
    border: 1px solid rgba(52, 211, 153, 0.35);
}
.cert-expired .cert-status-tag {
    color: var(--text-dim);
    background: rgba(138, 150, 178, 0.08);
    border: 1px solid var(--line-2);
}
.cert-icon {
    width: 44px; height: 44px;
    border-radius: 10px;
    background: rgba(76, 201, 240, 0.1);
    color: var(--primary);
    display: grid;
    place-items: center;
    margin-bottom: 16px;
}
.cert-expired .cert-icon {
    background: rgba(138, 150, 178, 0.08);
    color: var(--text-dim);
}
.cert-icon svg { width: 22px; height: 22px; }
.cert-card h3 {
    color: var(--heading);
    margin: 0 0 6px;
    font-size: 1.05rem;
    line-height: 1.3;
    padding-right: 70px;
}
.cert-code {
    margin: 0 0 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    color: var(--primary);
}
.cert-expired .cert-code { color: var(--text-dim); }
.cert-issuer {
    margin: 0;
    color: var(--text-dim);
    font-size: 0.88rem;
}

/* Timeline */
.timeline {
    list-style: none;
    margin: 0; padding: 0;
    position: relative;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), transparent);
}
.t-item {
    position: relative;
    padding-left: 44px;
    margin-bottom: 28px;
}
.t-dot {
    position: absolute;
    left: 4px; top: 14px;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(76,201,240,0.12);
}
.t-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px 24px;
    transition: border-color .2s ease, transform .2s ease;
}
.t-card:hover {
    border-color: var(--primary);
    transform: translateX(4px);
}
.t-period {
    margin: 0 0 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    color: var(--primary);
    letter-spacing: 0.04em;
}
.t-card h3 {
    color: var(--heading);
    margin: 0 0 4px;
    font-size: 1.1rem;
}
.t-org {
    color: var(--text-dim);
    margin: 0 0 12px;
    font-size: 0.92rem;
}
.t-bullets {
    margin: 12px 0 0;
    padding-left: 18px;
    color: var(--text);
}
.t-bullets li { margin-bottom: 6px; font-size: 0.95rem; }
.t-bullets strong { color: var(--heading); }

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}
.project-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 18px 40px -22px rgba(67,97,238,0.6);
}
.project-card header { margin-bottom: 10px; }
.project-card h3 {
    color: var(--heading);
    margin: 8px 0 0;
    font-size: 1.1rem;
}
.proj-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.74rem;
    color: var(--primary);
    background: rgba(76,201,240,0.08);
    border: 1px solid rgba(76,201,240,0.25);
    padding: 3px 8px;
    border-radius: 999px;
    letter-spacing: 0.04em;
}
.project-card p {
    color: var(--text);
    font-size: 0.93rem;
    margin: 0 0 14px;
    flex-grow: 1;
}
.proj-stack {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.proj-stack li {
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.74rem;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--surface-2);
}
.proj-link {
    display: inline-flex;
    align-items: center;
    margin-top: 12px;
    font-weight: 600;
    font-size: 0.9rem;
}
.project-card--cta {
    background:
        linear-gradient(180deg, rgba(67,97,238,0.08), rgba(114,9,183,0.05)),
        var(--surface);
    border-style: dashed;
}

/* Contact */
.section-contact { text-align: left; }
.contact-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    border-top: 1px solid var(--line);
    margin-top: 40px;
    padding: 28px 24px;
}
.footer-inner {
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-dim);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 8px;
}

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* Reduce-motion respect */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
}