/* ============================================
   CSS Variables & Reset
   ============================================ */

:root {
    /* Colors */
    --forest: #0A2F1F;
    --forest-mid: #064E3B;
    --forest-light: #065F46;
    --emerald: #10B981;
    --emerald-dark: #059669;
    --mint: #34D399;
    --sage: #D1FAE5;
    --sage-30: rgba(209, 250, 229, 0.3);
    --gold: #D4A843;
    --gold-light: #E8C86A;
    --charcoal: #1A1A2E;
    --slate: #64748B;
    --off-white: #F8FAF7;
    --white: #FFFFFF;

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --section-padding: 120px 0;
    --container-width: 1200px;
    --container-padding: 0 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.3);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--charcoal);
    background-color: var(--off-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   Utility Classes
   ============================================ */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: var(--section-padding);
}

.section-light {
    background-color: var(--off-white);
}

.section-dark {
    background: linear-gradient(135deg, var(--forest) 0%, var(--forest-mid) 50%, var(--forest-light) 100%);
    color: var(--white);
}

.section-sage {
    background-color: var(--sage-30);
}

.section-label {
    display: block;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--emerald);
    margin-bottom: 12px;
}

.section-label-light {
    color: var(--mint);
}

h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.5rem;
    color: var(--charcoal);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-title-light {
    color: var(--white);
}

.section-subtitle,
.section-subtitle-dark {
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto 60px;
    text-align: center;
}

.section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.section-subtitle-dark {
    color: var(--slate);
}

.section-light .section-label,
.section-sage .section-label,
.section-light h2,
.section-sage h2 {
    text-align: left;
}

.section-dark .section-label,
.section-dark h2,
.section-dark .section-subtitle {
    text-align: center;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--emerald), var(--emerald-dark));
    color: var(--white);
    border-color: var(--emerald);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 47, 31, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-body);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--white);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color var(--transition-fast);
}

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    padding-bottom: 4px;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--emerald);
    transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
}

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

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.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
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--forest) 0%, var(--forest-mid) 50%, var(--forest-light) 100%);
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(52, 211, 153, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 45%);
    background-size: 100% 100%;
}

/* Animated floating orbs */
.hero-bg-pattern::before,
.hero-bg-pattern::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.07;
}

.hero-bg-pattern::before {
    width: 600px;
    height: 600px;
    background: var(--emerald);
    top: -200px;
    right: -100px;
    animation: floatOrb 20s ease-in-out infinite;
}

.hero-bg-pattern::after {
    width: 400px;
    height: 400px;
    background: var(--mint);
    bottom: -100px;
    left: -50px;
    animation: floatOrb 15s ease-in-out infinite reverse;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 24px;
}

.hero-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-name {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 16px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-phd {
    font-size: 0.6em;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
}

.hero-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--sage);
    margin-bottom: 12px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-mission {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1s;
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.4);
    font-size: 1.2rem;
    animation: bounce 2s ease-in-out infinite;
    z-index: 2;
}

.scroll-indicator:hover {
    color: var(--mint);
}

/* ============================================
   About Section
   ============================================ */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.photo-frame {
    position: relative;
    width: 280px;
    aspect-ratio: 3 / 4;
    border-radius: 16px;
    overflow: hidden;
    border: 3px solid var(--sage);
    box-shadow: var(--shadow-md);
}

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

.photo-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--forest), var(--forest-mid));
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-placeholder span {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--mint);
    opacity: 0.5;
}

.about-location {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--slate);
}

.about-location i {
    color: var(--emerald);
    margin-right: 6px;
}

.about-text h2 {
    margin-bottom: 24px;
}

.about-text p {
    color: var(--slate);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.pull-quote {
    border-left: 4px solid var(--emerald);
    padding: 16px 24px;
    margin: 28px 0;
    background: rgba(209, 250, 229, 0.3);
    border-radius: 0 8px 8px 0;
}

.pull-quote p {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--forest);
    line-height: 1.6;
    margin-bottom: 0;
}

.about-philanthropy {
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.philanthropy-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--slate);
}

.philanthropy-item i {
    color: var(--emerald);
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

/* ============================================
   Career Timeline
   ============================================ */

.timeline {
    position: relative;
    max-width: 900px;
    margin: 60px auto 80px;
    padding: 0 20px;
}

/* Center line */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--emerald), transparent);
}

.timeline-entry {
    position: relative;
    width: 50%;
    padding: 0 40px 60px;
}

.timeline-entry:nth-child(odd) {
    left: 0;
    text-align: right;
    padding-right: 60px;
    padding-left: 0;
}

.timeline-entry:nth-child(even) {
    left: 50%;
    text-align: left;
    padding-left: 60px;
    padding-right: 0;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--emerald);
    border: 3px solid var(--forest);
    border-radius: 50%;
    top: 8px;
    z-index: 2;
    transition: all var(--transition-base);
}

.timeline-entry:nth-child(odd) .timeline-dot {
    right: -8px;
}

.timeline-entry:nth-child(even) .timeline-dot {
    left: -8px;
}

.timeline-dot.glow {
    box-shadow: var(--shadow-glow);
    transform: scale(1.3);
}

.timeline-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 24px;
    transition: all var(--transition-base);
}

.timeline-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(16, 185, 129, 0.3);
}

.timeline-card-current {
    border-color: var(--emerald);
    background: rgba(16, 185, 129, 0.1);
}

.timeline-date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gold);
    letter-spacing: 0.05em;
}

.timeline-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--white);
    margin: 8px 0 4px;
}

.timeline-company {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--emerald);
    margin-bottom: 8px !important;
}

.timeline-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
    padding: 48px 32px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    text-align: center;
}

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -16px;
    top: 10%;
    height: 80%;
    width: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-family: var(--font-body);
    font-size: 3rem;
    font-weight: 700;
    color: var(--emerald);
    display: inline;
}

.stat-prefix {
    font-family: var(--font-body);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--emerald);
    vertical-align: super;
    margin-right: 2px;
}

.stat-suffix {
    font-family: var(--font-body);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--emerald);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 8px;
    letter-spacing: 0.03em;
}

/* ============================================
   Aridica Section
   ============================================ */

.section-tagline {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--emerald-dark);
    margin-bottom: 16px;
}

.aridica-intro {
    font-size: 1.1rem;
    color: var(--slate);
    max-width: 800px;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--sage);
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--sage);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--emerald-dark);
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
    background: var(--emerald);
    color: var(--white);
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--charcoal);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--slate);
    line-height: 1.6;
}

/* Team */
.team-section {
    margin-bottom: 40px;
}

.team-heading {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--charcoal);
    margin-bottom: 24px;
}

.team-grid {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.team-member {
    display: flex;
    align-items: center;
    gap: 16px;
}

.team-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--forest), var(--forest-mid));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--mint);
    flex-shrink: 0;
}

.team-info {
    display: flex;
    flex-direction: column;
}

.team-info strong {
    font-size: 0.95rem;
    color: var(--charcoal);
}

.team-info span {
    font-size: 0.85rem;
    color: var(--slate);
}

/* Advisors */
.advisors-heading {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate);
    margin-bottom: 16px;
}

.advisors-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.advisor-badge {
    font-size: 0.88rem;
    color: var(--charcoal);
    background: var(--white);
    border: 1px solid var(--sage);
    border-radius: 8px;
    padding: 10px 16px;
}

.advisor-badge strong {
    color: var(--forest);
}

/* Traction */
.traction-section {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.traction-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--white);
    border: 2px solid var(--emerald);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--forest);
}

.traction-badge i {
    color: var(--emerald);
}

/* ============================================
   Board Memberships
   ============================================ */

.boards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.board-card {
    background: var(--white);
    border-top: 4px solid var(--emerald);
    border-radius: 0 0 16px 16px;
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.board-icon {
    width: 48px;
    height: 48px;
    background: var(--sage);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--emerald-dark);
    margin-bottom: 16px;
}

.board-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--charcoal);
    margin-bottom: 4px;
}

.board-role {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--emerald);
    margin-bottom: 2px;
}

.board-period {
    font-size: 0.8rem;
    color: var(--slate);
    margin-bottom: 12px;
}

.board-card > p:last-child {
    font-size: 0.92rem;
    color: var(--slate);
    line-height: 1.6;
}

/* ============================================
   Research & Publications
   ============================================ */

.journals-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
}

.journal-pill {
    padding: 8px 20px;
    border: 2px solid var(--emerald);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--emerald-dark);
    background: var(--white);
    transition: all var(--transition-base);
}

.journal-pill:hover {
    background: var(--emerald);
    color: var(--white);
}

#research .section-label,
#research h2 {
    text-align: center;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.research-card {
    background: var(--white);
    border: 1px solid var(--sage);
    border-radius: 16px;
    padding: 36px 32px;
    transition: all var(--transition-base);
}

.research-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--emerald);
}

.research-icon {
    width: 48px;
    height: 48px;
    background: var(--sage);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--emerald-dark);
    margin-bottom: 16px;
}

.research-degree {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gold);
}

.research-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--charcoal);
    margin: 8px 0 4px;
}

.research-institution {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--emerald);
    margin-bottom: 12px;
}

.research-card > p:last-child {
    font-size: 0.95rem;
    color: var(--slate);
    line-height: 1.6;
}

/* ============================================
   Awards
   ============================================ */

.awards-showcase {
    max-width: 900px;
    margin: 0 auto;
}

.edison-card {
    text-align: center;
    padding: 48px 32px;
    background: rgba(212, 168, 67, 0.08);
    border: 2px solid rgba(212, 168, 67, 0.3);
    border-radius: 20px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.edison-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(212, 168, 67, 0.05) 50%, transparent 100%);
    background-size: 200% 200%;
    animation: shimmer 3s ease-in-out infinite;
}

.edison-number {
    font-family: var(--font-body);
    font-size: 5rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
    position: relative;
}

.edison-card h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--gold-light);
    margin: 8px 0 12px;
    position: relative;
}

.edison-card p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    position: relative;
}

.edison-card p strong {
    color: var(--gold);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.award-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 28px 24px;
    text-align: center;
    transition: all var(--transition-base);
}

.award-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(212, 168, 67, 0.3);
}

.award-icon {
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: 16px;
}

.award-card h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--white);
    margin-bottom: 8px;
}

.award-card > p {
    font-size: 0.85rem;
    color: var(--gold);
    margin-bottom: 8px;
}

.award-detail {
    font-size: 0.88rem !important;
    color: rgba(255, 255, 255, 0.6) !important;
    line-height: 1.5;
}

/* ============================================
   The 4 D's
   ============================================ */

#four-ds .section-label,
#four-ds h2 {
    text-align: center;
}

.four-ds-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.d-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--white);
    border: 1px solid var(--sage);
    border-radius: 16px;
    transition: all var(--transition-base);
}

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

.d-icon-wrap {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--sage) 0%, rgba(16, 185, 129, 0.15) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--emerald-dark);
    transition: all var(--transition-base);
}

.d-card:hover .d-icon-wrap {
    background: linear-gradient(135deg, var(--emerald), var(--emerald-dark));
    color: var(--white);
    transform: scale(1.05);
}

.d-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--charcoal);
    margin-bottom: 12px;
}

.d-card p {
    font-size: 0.9rem;
    color: var(--slate);
    line-height: 1.6;
}

/* ============================================
   Contact
   ============================================ */

.section-contact {
    text-align: center;
    padding: 100px 0;
}

.contact-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto 48px;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--white);
    transition: all var(--transition-base);
}

a.contact-item:hover {
    color: var(--mint);
    transform: translateY(-2px);
}

.contact-item i {
    font-size: 2rem;
    color: var(--emerald);
}

.contact-item span {
    font-size: 1rem;
    font-weight: 500;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--forest);
    padding: 48px 0 32px;
    text-align: center;
    position: relative;
}

.footer-name {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--white);
    margin-bottom: 4px;
}

.footer-tagline {
    font-size: 0.9rem;
    font-style: italic;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.2rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--emerald);
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.3);
}

.back-to-top {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--emerald);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.9rem;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.back-to-top:hover {
    background: var(--mint);
    transform: translateX(-50%) translateY(-2px);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1200px) {
    .four-ds-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    h2 {
        font-size: 2rem;
    }

    /* Nav */
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--forest);
        flex-direction: column;
        padding: 80px 40px;
        gap: 24px;
        transition: right var(--transition-base);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-photo {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .photo-frame {
        width: 220px;
    }

    .about-text h2 {
        text-align: center;
    }

    /* Timeline */
    .timeline::before {
        left: 20px;
    }

    .timeline-entry,
    .timeline-entry:nth-child(odd),
    .timeline-entry:nth-child(even) {
        width: 100%;
        left: 0;
        text-align: left;
        padding-left: 52px;
        padding-right: 0;
    }

    .timeline-entry:nth-child(odd) .timeline-dot,
    .timeline-entry:nth-child(even) .timeline-dot {
        left: 12px;
        right: auto;
    }

    /* Stats */
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .stat-item:nth-child(2)::after {
        display: none;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Boards */
    .boards-grid {
        grid-template-columns: 1fr;
    }

    /* Research */
    .research-grid {
        grid-template-columns: 1fr;
    }

    /* Awards */
    .awards-grid {
        grid-template-columns: 1fr;
    }

    .edison-number {
        font-size: 3.5rem;
    }

    /* 4 D's */
    .four-ds-grid {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-methods {
        flex-direction: column;
        align-items: center;
        gap: 32px;
    }

    /* Team */
    .team-grid {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }

    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }

    .stats-bar {
        grid-template-columns: 1fr;
        padding: 32px 24px;
    }

    .stat-item::after {
        display: none;
    }
}