/* ===== CSS Variables ===== */
:root {
    --color-primary: #0a1628;
    --color-secondary: #1a365d;
    --color-accent: #2563eb;
    --color-accent-light: #3b82f6;
    --color-text: #1a1a2e;
    --color-text-light: #64748b;
    --color-text-muted: #94a3b8;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0a1628;
    --color-border: #e2e8f0;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 48px;
    }
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (min-width: 768px) {
    .nav-container {
        padding: 0 48px;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
}

.logo-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 32px;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-light);
}

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

.nav-cta {
    padding: 10px 20px;
    background: var(--color-primary);
    color: white !important;
    border-radius: 6px;
}

.nav-cta:hover {
    background: var(--color-secondary);
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    padding: 24px;
    border-bottom: 1px solid var(--color-border);
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu a {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text);
    padding: 8px 0;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-secondary) 100%);
    color: white;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    padding: 120px 0;
}

.hero-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-light);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.5; height: 48px; }
    50% { opacity: 1; height: 64px; }
}

/* ===== Sections ===== */
.section {
    padding: 96px 0;
}

@media (min-width: 768px) {
    .section {
        padding: 128px 0;
    }
}

.section-grid {
    display: grid;
    gap: 48px;
}

@media (min-width: 1024px) {
    .section-grid {
        grid-template-columns: 200px 1fr;
        gap: 64px;
    }
}

.section-label {
    display: flex;
    gap: 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.section-content > p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 720px;
    margin-bottom: 16px;
}

/* ===== About Section ===== */
.about {
    background: var(--color-bg-alt);
}

/* ===== Philosophy Section ===== */
.principles-grid {
    display: grid;
    gap: 32px;
    margin-top: 48px;
}

@media (min-width: 768px) {
    .principles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 48px;
    }
}

.principle {
    position: relative;
    padding-left: 24px;
    border-left: 2px solid var(--color-border);
}

.principle-number {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.principle h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.principle p {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== Apply Section ===== */
.apply {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-secondary) 100%);
    color: white;
}

.apply .section-label span {
    color: rgba(255, 255, 255, 0.5);
}

.apply h2 {
    color: white;
}

.apply-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(34, 197, 94, 0.2);
    border: 1px solid rgba(34, 197, 94, 0.4);
    border-radius: 24px;
    margin-bottom: 24px;
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.badge-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: #22c55e;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.apply-intro {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
    margin-bottom: 48px !important;
}

.cohorts-grid {
    display: grid;
    gap: 24px;
    margin-bottom: 48px;
}

@media (min-width: 768px) {
    .cohorts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.cohort-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
}

.cohort-season {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-light);
    margin-bottom: 8px;
}

.cohort-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.cohort-card p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 16px;
    line-height: 1.6;
}

.cohort-details {
    list-style: none;
    margin-bottom: 20px;
}

.cohort-details li {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cohort-status {
    display: inline-block;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
}

.status-active {
    background: rgba(34, 197, 94, 0.3);
    color: #22c55e;
    animation: pulse-status 2s ease-in-out infinite;
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.status-upcoming {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.status-future {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

.apply-cta {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
}

.apply-cta h3 {
    font-size: 1.25rem;
    margin-bottom: 24px;
}

.criteria-grid {
    display: grid;
    gap: 16px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .criteria-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .criteria-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.criteria-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
}

.criteria-icon {
    color: var(--color-accent-light);
}

.apply-cta .btn-primary {
    background: white;
    color: var(--color-primary);
}

.apply-cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* ===== Focus Section ===== */
.focus-areas {
    background: var(--color-bg-alt);
}

.focus-intro {
    margin-bottom: 48px !important;
}

.focus-grid {
    display: grid;
    gap: 24px;
}

@media (min-width: 640px) {
    .focus-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .focus-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.focus-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.focus-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.focus-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
}

.focus-icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-accent);
}

.focus-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.focus-card p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== Team Section ===== */
.team-intro {
    margin-bottom: 48px !important;
}

.team-category {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    margin-top: 48px;
}

.team-category:first-of-type {
    margin-top: 0;
}

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

@media (min-width: 640px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.team-card {
    text-align: center;
}

.team-photo {
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    object-fit: cover;
    object-position: center top;
}

.placeholder-photo {
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-border) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

img.team-photo,
img.advisor-photo {
    width: 160px;
    height: 160px;
    object-fit: cover;
    object-position: center top;
}

.team-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text-muted);
}

.team-role {
    font-size: 0.875rem;
    color: var(--color-accent);
    display: block;
    margin-bottom: 12px;
}

.team-bio {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

.advisors-grid {
    grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
    .advisors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .advisors-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.advisor-card {
    text-align: center;
}

.advisor-photo {
    width: 100px;
    height: 100px;
    margin: 0 auto 16px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
}

img.advisor-photo {
    width: 100px;
    height: 100px;
}

.advisor-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text-muted);
}

/* ===== Portfolio Section ===== */
.portfolio {
    background: var(--color-bg-alt);
}

.portfolio-intro {
    margin-bottom: 32px !important;
}

/* Portfolio Filters */
.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.filter-btn {
    padding: 8px 16px;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: inherit;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.portfolio-card.hidden {
    display: none;
}

.portfolio-grid {
    display: grid;
    gap: 24px;
    margin-bottom: 48px;
}

@media (min-width: 640px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.portfolio-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    text-align: center;
    transition: var(--transition);
}

.portfolio-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow);
}

.portfolio-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: white;
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.portfolio-logo.text-logo {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

img.portfolio-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    padding: 8px;
    background: white;
    border-radius: 12px;
}

.portfolio-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text-muted);
}

.portfolio-sector {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    display: block;
}

.portfolio-stage {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 10px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-accent);
    color: white;
    border-radius: 20px;
}

.portfolio-category {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-top: 48px;
    margin-bottom: 24px;
}

.exits-grid .portfolio-card {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-secondary) 100%);
    color: white;
}

.exits-grid .portfolio-card h4 {
    color: white;
}

.exits-grid .portfolio-sector {
    color: rgba(255, 255, 255, 0.7);
}

.portfolio-logo.exit-logo {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.portfolio-exit {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 10px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 20px;
}

.exit-card:hover {
    border-color: transparent;
    transform: translateY(-4px);
}

.portfolio-cta {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.portfolio-cta p {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: 16px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

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

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    gap: 48px;
    margin-top: 48px;
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 64px;
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.contact-item a {
    font-size: 1.125rem;
    color: var(--color-primary);
}

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

.contact-item address {
    font-style: normal;
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    gap: 48px;
    margin-bottom: 48px;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr auto;
    }
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    gap: 48px;
}

.footer-col h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.social-links a:hover {
    background: var(--color-accent);
}

.social-links svg {
    width: 18px;
    height: 18px;
}

/* ===== Utilities ===== */
@media (max-width: 767px) {
    .hero-stats {
        gap: 32px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 32px;
    }
}