/* ============================
   CSS Custom Properties
   ============================ */
:root {
    --color-bg: #0a0e17;
    --color-bg-alt: #101624;
    --color-bg-card: #151c2e;
    --color-bg-card-hover: #1a2340;
    --color-surface: rgba(255, 255, 255, 0.04);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --color-text: #e4e8f1;
    --color-text-muted: #8892a8;
    --color-text-dim: #5a637a;
    --color-heading: #ffffff;
    --color-primary: #4f8cff;
    --color-primary-glow: rgba(79, 140, 255, 0.25);
    --color-accent: #d4a017;
    --color-accent-2: #f59e0b;
    --color-gradient-1: #4f8cff;
    --color-gradient-2: #d4a017;
    --color-gradient-3: #f5c518;

    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px var(--color-primary-glow);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   Reset & Base Styles
   ============================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 20px;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-accent);
}

/* ============================
   Container
   ============================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================
   Navigation
   ============================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.nav.scrolled {
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 0;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-heading);
    letter-spacing: -0.02em;
    text-decoration: none;
}

.nav-logo:hover {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    color: var(--color-text-muted);
    font-size: 1rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-decoration: none;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================
   Hero Section
   ============================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-gradient-1), transparent 70%);
    top: -200px;
    right: -150px;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-gradient-2), transparent 70%);
    bottom: -150px;
    left: -100px;
    animation: float 25s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--color-gradient-3), transparent 70%);
    top: 40%;
    left: 50%;
    animation: float 18s ease-in-out infinite 5s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -30px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 80px;
    position: relative;
    z-index: 1;
}

.hero-photo-container {
    flex-shrink: 0;
}

.hero-photo {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-border);
    position: relative;
    box-shadow: var(--shadow-glow);
    background: var(--color-bg-card);
}

.hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--color-text-dim);
    background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-alt));
}

.photo-placeholder span {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-text {
    flex: 1;
}

.hero-greeting {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--color-heading);
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 500px;
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    color: #fff;
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-primary-glow);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface);
    border-color: var(--color-border-hover);
    color: var(--color-heading);
    transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.scroll-arrow {
    width: 28px;
    height: 44px;
    border: 2px solid var(--color-border);
    border-radius: 14px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {

    0%,
    100% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateX(-50%) translateY(8px);
    }
}

/* ============================
   Section Styles
   ============================ */
.section {
    padding: 120px 0;
    position: relative;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-dark {
    background: linear-gradient(180deg, var(--color-bg), #060a12);
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: 16px;
    padding: 6px 16px;
    background: rgba(79, 140, 255, 0.1);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(79, 140, 255, 0.15);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--color-heading);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-gradient-1), var(--color-gradient-3));
    border-radius: 2px;
    margin: 0 auto;
}

/* ============================
   About Section
   ============================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.about-lead {
    font-size: 1.15rem !important;
    color: var(--color-text) !important;
    line-height: 1.8;
}

.about-text strong {
    color: var(--color-heading);
    font-weight: 600;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    color: var(--color-primary);
    margin-bottom: 12px;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-dim);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-heading);
}

.stat-card-wide {
    grid-column: 1 / -1;
}

/* ============================
   Timeline / Career
   ============================ */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 48px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--color-gradient-1), var(--color-gradient-3), transparent);
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

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

.timeline-marker {
    position: absolute;
    left: -48px;
    top: 28px;
}

.timeline-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 3px solid var(--color-primary);
    position: relative;
    left: 10px;
}

.timeline-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.timeline-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.timeline-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    background: rgba(79, 140, 255, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    border: 1px solid rgba(79, 140, 255, 0.15);
}

.education-badge {
    color: var(--color-accent-2);
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.15);
}

.timeline-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 8px;
}

.timeline-role {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 16px;
}

.timeline-card p:last-of-type:not(.timeline-role) {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-surface);
    padding: 4px 12px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

/* ============================
   Engagements / Events Section
   ============================ */
.engagements-grid,
.events-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 24px;
}

.event-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.event-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.event-card-accent {
    height: 4px;
    background: linear-gradient(90deg, var(--color-gradient-1), var(--color-gradient-3));
}

.event-card-content {
    padding: 32px;
}

.event-icon {
    color: var(--color-primary);
    margin-bottom: 20px;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79, 140, 255, 0.08);
    border-radius: var(--radius-md);
    border: 1px solid rgba(79, 140, 255, 0.1);
}

.event-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 8px;
}

.event-subtitle {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 16px;
}

.event-card p:last-of-type:not(.event-subtitle) {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.event-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: var(--transition);
}

.event-link:hover {
    gap: 10px;
    color: var(--color-accent);
}

.event-card-featured {
    grid-row: span 1;
}

/* ============================
   Volunteering Section
   ============================ */
.volunteer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.volunteer-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.volunteer-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.volunteer-icon {
    color: var(--color-primary);
    margin-bottom: 20px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79, 140, 255, 0.08);
    border-radius: var(--radius-md);
    border: 1px solid rgba(79, 140, 255, 0.1);
}

.volunteer-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 6px;
}

.volunteer-org {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 4px;
}

.volunteer-dates {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-bottom: 16px;
}

.volunteer-card>p:last-child {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ============================
   Interests Section
   ============================ */
.interests-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.interest-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.interest-item:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.interest-icon-wrap {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(79, 140, 255, 0.1), rgba(168, 85, 247, 0.1));
    border: 1px solid rgba(79, 140, 255, 0.12);
    color: var(--color-primary);
    transition: var(--transition);
}

.interest-item:hover .interest-icon-wrap {
    background: linear-gradient(135deg, rgba(79, 140, 255, 0.2), rgba(168, 85, 247, 0.2));
    transform: scale(1.05);
}

.interest-item h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 10px;
}

.interest-item p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ============================
   Contact Section
   ============================ */
.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 48px;
    line-height: 1.8;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 640px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-decoration: none;
}

.contact-card:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    color: inherit;
}

.contact-card svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.contact-card div {
    display: flex;
    flex-direction: column;
}

.contact-card-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.contact-card-value {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-heading);
}

/* ============================
   Footer
   ============================ */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    background: #060a12;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-heading);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

/* ============================
   Animations (Scroll Reveal)
   ============================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Staggered: delay applied via JS */

/* ============================
   Responsive Design
   ============================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .engagements-grid,
    .events-grid {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: rgba(16, 22, 36, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 4px;
        transform: translateX(100%);
        transition: var(--transition);
        border-left: 1px solid var(--color-border);
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1.25rem;
        padding: 12px 16px;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-photo {
        width: 200px;
        height: 200px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .section {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .engagements-grid,
    .events-grid,
    .volunteer-grid,
    .interests-grid {
        grid-template-columns: 1fr;
    }

    .contact-links {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    .timeline {
        padding-left: 32px;
    }

    .timeline::before {
        left: 8px;
    }

    .timeline-marker {
        left: -32px;
    }

    .timeline-dot {
        left: 2px;
        width: 12px;
        height: 12px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }

    .hero-name {
        font-size: 2.2rem;
    }

    .timeline-card {
        padding: 24px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.85rem;
    }
}