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

:root {
    --color-bg: #020617;
    --color-bg-alt: #02081b;
    --color-surface: #020617;
    --color-surface-elevated: #020617;
    --color-surface-soft: rgba(15, 23, 42, 0.85);
    --color-border-subtle: rgba(148, 163, 184, 0.35);
    --color-text: #e5e7eb;
    --color-muted: #9ca3af;
    --color-heading: #f9fafb;
    --color-accent: #38bdf8;
    --color-accent-strong: #6366f1;
    --color-accent-soft: rgba(56, 189, 248, 0.14);
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.9);
    --shadow-sm: 0 12px 30px rgba(15, 23, 42, 0.7);
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-text);
    background:
        radial-gradient(circle at top, rgba(37, 99, 235, 0.22), transparent 55%),
        radial-gradient(circle at 12% 80%, rgba(56, 189, 248, 0.18), transparent 55%),
        linear-gradient(145deg, #020617, #020617 45%, #020617 100%);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.skip-link {
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    background: #f8fafc;
    color: #0f172a;
    border-radius: 6px;
    transform: translateY(-200%);
    transition: transform 0.2s ease;
    z-index: 100;
}

.skip-link:focus {
    transform: translateY(0);
}

.section {
    padding: 6rem 0;
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }

    .container {
        padding: 0 1.5rem;
    }
}

.visually-hidden {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

.icon {
    display: block;
    width: 1.75rem;
    height: 1.75rem;
}

.icon--small {
    width: 1.75rem;
    height: 1.75rem;
}

.icon--xsmall {
    width: 1.5rem;
    height: 1.5rem;
}

/* Header & navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.98));
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
    backdrop-filter: blur(18px);
}

body.nav-open {
    overflow: hidden;
}

#navbar {
    padding: 0.9rem 0;
    position: relative;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    position: relative;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-heading);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    font-size: 0.95rem;
}

.nav-links a {
    position: relative;
    font-weight: 500;
    color: var(--color-muted);
    padding-bottom: 0.15rem;
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -0.3rem;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong));
    border-radius: 999px;
    transition: width 0.25s ease;
}

.nav-links a:hover {
    color: var(--color-heading);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 999px;
    color: var(--color-heading);
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 5px;
}

.nav-toggle-bar {
    display: block;
    width: 26px;
    height: 2px;
    background: currentColor;
    margin: 5px 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

body.nav-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

body.nav-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

body.nav-open .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 0.75rem);
        left: 1rem;
        right: 1rem;
        flex-direction: column;
        background: rgba(2, 6, 23, 0.98);
        border: 1px solid rgba(148, 163, 184, 0.35);
        border-radius: var(--radius-lg);
        padding: 1.25rem;
        gap: 1rem;
        display: none;
        box-shadow: var(--shadow-soft);
    }

    body.nav-open .nav-links {
        display: flex;
    }
}

/* Buttons & chips */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.9rem 1.6rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-strong));
    color: #0b1120;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 40px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
    background: transparent;
    color: var(--color-heading);
    border: 1px solid rgba(148, 163, 184, 0.6);
}

.btn-secondary:hover {
    background: rgba(15, 23, 42, 0.85);
    transform: translateY(-1px);
}

.btn-cta {
    margin: 3rem auto 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-strong));
    color: #020617;
    box-shadow: var(--shadow-soft);
    padding-inline: 2.4rem;
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 60px rgba(37, 99, 235, 0.6);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.5);
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.25), rgba(15, 23, 42, 0.95));
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-muted);
}

@media (max-width: 768px) {
    .btn {
        width: 100%;
        justify-content: center;
    }

    .cta-buttons {
        flex-direction: column;
    }
}

/* Hero */
.hero {
    position: relative;
    min-height: min(100vh, 860px);
    display: flex;
    align-items: flex-start;
    padding: clamp(3.2rem, 6vw, 4.5rem) 0 4rem;
    color: var(--color-heading);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.25), transparent 55%),
        radial-gradient(circle at top right, rgba(129, 140, 248, 0.35), transparent 60%);
    opacity: 0.55;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.4fr);
    gap: 3.5rem;
    align-items: center;
}

.hero-text {
    max-width: 40rem;
}

.hero-eyebrow {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-muted);
    margin-bottom: 0.9rem;
}

.hero h1 {
    font-size: clamp(2.4rem, 3.6vw, 3.3rem);
    line-height: 1.15;
    font-weight: 800;
    margin-bottom: 1.2rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-muted);
    max-width: 32rem;
}

.hero-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.6rem;
}

.hero-footnote {
    margin-top: 1.8rem;
    font-size: 0.95rem;
    color: var(--color-muted);
}

.hero-visual {
    justify-self: end;
    max-width: 360px;
}

.hero-visual-svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 24px 80px rgba(15, 23, 42, 0.9));
}

@media (max-width: 900px) {
    .hero {
        min-height: auto;
        padding: 3.5rem 0 3.5rem;
    }

    .hero .container {
        grid-template-columns: minmax(0, 1fr);
        gap: 2.5rem;
    }

    .hero-visual {
        max-width: 320px;
        margin-inline: auto;
    }
}

/* Sections & shared components */
.section-label {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-accent);
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(56, 189, 248, 0.4);
    margin-bottom: 1rem;
}

.section-label--accent {
    color: #f97316;
    border-color: rgba(249, 115, 22, 0.55);
}

.section-label--subtle {
    color: var(--color-muted);
    border-color: rgba(148, 163, 184, 0.4);
}

section h2 {
    font-size: clamp(2rem, 3vw, 2.6rem);
    font-weight: 800;
    color: var(--color-heading);
    margin-bottom: 1rem;
}

.section-intro {
    max-width: 40rem;
    font-size: 1.05rem;
    color: var(--color-muted);
    margin-bottom: 2.5rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
    margin-top: 2.5rem;
}

@media (max-width: 960px) {
    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .cards-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.card {
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), rgba(15, 23, 42, 0.96));
    border-radius: var(--radius-lg);
    padding: 1.8rem 1.5rem;
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-soft);
    border-color: rgba(56, 189, 248, 0.7);
}

.card-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.32), rgba(15, 23, 42, 0.9));
    color: var(--color-accent);
    margin-bottom: 1.2rem;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
    color: var(--color-heading);
}

.card p {
    font-size: 0.98rem;
    color: var(--color-muted);
    margin-bottom: 1.1rem;
}

.badge {
    display: inline-flex;
    padding: 0.25rem 0.8rem;
    border-radius: 999px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(249, 250, 251, 0.9);
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.7);
}

.highlight-box {
    margin-top: 2.5rem;
    padding: 1.4rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(56, 189, 248, 0.5);
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 64, 175, 0.95));
    display: flex;
    align-items: center;
    gap: 1rem;
}

.highlight-icon {
    width: 2.1rem;
    height: 2.1rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.95);
    color: var(--color-accent);
}

.highlight-box p {
    font-size: 0.98rem;
    color: #e0f2fe;
}

.problem {
    background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.95), #020617);
}

/* Solution */
.solution {
    background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.18), #020617);
    border-top: 1px solid rgba(15, 23, 42, 0.9);
}

.solution-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.6fr);
    gap: 2.5rem;
    align-items: stretch;
    margin-top: 2.8rem;
}

@media (max-width: 960px) {
    .solution-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}

.program-box {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.45), rgba(15, 23, 42, 0.98));
    border-radius: var(--radius-xl);
    padding: 2rem 1.8rem;
    border: 1px solid rgba(129, 140, 248, 0.8);
    box-shadow: var(--shadow-soft);
}

.program-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.program-icon {
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.38), rgba(15, 23, 42, 0.95));
    color: #0f172a;
}

.program-box h3 {
    font-size: 1.6rem;
}

.program-tagline {
    font-size: 1.12rem;
    color: #e0f2fe;
    margin-bottom: 1.15rem;
}

.program-box p {
    font-size: 1.05rem;
    color: var(--color-muted);
    line-height: 1.7;
}

.program-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-top: 1.8rem;
}

.stat {
    min-width: 5rem;
}

.stat-number {
    display: block;
    font-size: clamp(2.6rem, 5vw, 3.4rem);
    font-weight: 800;
    color: var(--color-heading);
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-muted);
}

.stat-item--flags .flag-row {
    margin-top: 0.4rem;
    display: flex;
    gap: 0.6rem;
    color: var(--color-accent);
}

.principles-section {
    padding: 1rem 0;
}

.principles-title {
    font-size: 1.1rem;
    color: var(--color-heading);
    margin-bottom: 1.4rem;
}

.mini-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.1rem;
}

.mini-card {
    background: rgba(15, 23, 42, 0.96);
    border-radius: var(--radius-lg);
    padding: 1.2rem 1.1rem;
    border: 1px solid rgba(148, 163, 184, 0.55);
}

.mini-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 1);
    color: var(--color-accent);
    margin-bottom: 0.7rem;
}

.mini-card h4 {
    font-size: 1.02rem;
    margin-bottom: 0.4rem;
    color: var(--color-heading);
}

.mini-card p {
    font-size: 0.95rem;
    color: var(--color-muted);
}

.program-timeline {
    margin-top: 3rem;
}

.timeline-title {
    font-size: 1.2rem;
    color: var(--color-heading);
    margin-bottom: 1.5rem;
}

.phase-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
}

@media (max-width: 960px) {
    .phase-cards {
        grid-template-columns: minmax(0, 1fr);
    }
}

.phase-card {
    background: rgba(15, 23, 42, 0.98);
    border-radius: var(--radius-lg);
    padding: 1.4rem 1.3rem;
    border: 1px solid rgba(148, 163, 184, 0.55);
}

.phase-header {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-bottom: 0.7rem;
}

.phase-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 1);
    color: var(--color-accent);
}

.phase-card h4 {
    font-size: 1.02rem;
    color: var(--color-heading);
}

.phase-list {
    list-style: none;
    font-size: 0.95rem;
    color: var(--color-muted);
}

.phase-list li + li {
    margin-top: 0.45rem;
}

.results-box {
    margin-top: 3.5rem;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(148, 163, 184, 0.3);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 1.2rem;
}

@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.result-item {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
}

.result-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.95);
    color: var(--color-accent);
    flex-shrink: 0;
}

.result-item p {
    font-size: 0.98rem;
    color: var(--color-muted);
}

/* About */
.about {
    background: radial-gradient(circle at bottom, rgba(15, 23, 42, 0.96), #020617);
    border-top: 1px solid rgba(15, 23, 42, 0.9);
}

.subtitle {
    font-size: 1.02rem;
    color: var(--color-muted);
    max-width: 40rem;
    margin-bottom: 2.4rem;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
    .profile-stats {
        grid-template-columns: minmax(0, 1fr);
    }
}

.stat-item {
    padding: 1.2rem 1rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.5);
    background: rgba(15, 23, 42, 0.96);
}

.experience-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

@media (max-width: 960px) {
    .experience-summary {
        grid-template-columns: minmax(0, 1fr);
    }
}

.experience-card {
    padding: 1.6rem 1.4rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.5);
    background: rgba(15, 23, 42, 0.97);
}

.experience-icon {
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 1);
    color: var(--color-accent);
    margin-bottom: 0.9rem;
}

.experience-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
    color: var(--color-heading);
}

.experience-card p {
    font-size: 0.96rem;
    color: var(--color-muted);
}

.conference-gallery {
    margin-top: 2.5rem;
}

.conference-gallery h3 {
    font-size: 1.2rem;
    margin-bottom: 1.4rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.35rem;
}

@media (max-width: 960px) {
    .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .gallery-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.gallery-image {
    height: 260px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.value-prop {
    margin-top: 3rem;
    padding: 1.6rem 1.4rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-accent-strong);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(15, 23, 42, 0.98));
}

.value-prop p {
    font-size: 1rem;
    color: #e0f2fe;
}

.value-prop strong {
    color: var(--color-heading);
    font-weight: 700;
}

/* Contact */
.contact {
    background: radial-gradient(circle at top, rgba(56, 189, 248, 0.18), #020617);
    border-top: 1px solid rgba(15, 23, 42, 0.9);
}

.contact > p {
    font-size: 1rem;
    color: var(--color-muted);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .contact-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.contact-item {
    padding: 1.6rem 1.4rem;
    border-radius: var(--radius-lg);
    background: rgba(15, 23, 42, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.55);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
    border-color: rgba(56, 189, 248, 0.7);
}

.contact-item h4 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.02rem;
    color: var(--color-heading);
    margin-bottom: 0.8rem;
}

.contact-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 1);
    color: var(--color-accent);
}

.contact-item a {
    font-size: 0.98rem;
    color: #93c5fd;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Footer */
.site-footer {
    background: #020617;
    border-top: 1px solid rgba(15, 23, 42, 0.9);
    text-align: center;
    padding: 1.8rem 1rem 2rem;
    color: var(--color-muted);
    font-size: 0.9rem;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .btn,
    .card,
    .contact-item {
        transition: none;
    }
}