:root {
    color-scheme: light dark;
    --brand-primary: #001e61;
    --brand-secondary: #7a1625;
    --neutral-100: #f5f7fa;
    --neutral-200: #e4e7ec;
    --neutral-700: #2d3142;
    --accent: #c89c43;
    --gradient: linear-gradient(135deg, rgba(0, 30, 97, 0.85), rgba(122, 22, 37, 0.85));
    font-family: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
    background: var(--neutral-100);
    color: var(--neutral-700);
    line-height: 1.6;
}

.sold-out-body,
.form-body {
    display: flex;
    min-height: 100vh;
    background: linear-gradient(140deg, rgba(0, 30, 97, 0.9), rgba(122, 22, 37, 0.85));
}

.sold-out-wrapper,
.form-wrapper {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
}

.sold-out-card,
.form-card {
    width: min(560px, 100%);
    background: rgba(255, 255, 255, 0.96);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 20px 45px rgba(5, 15, 45, 0.25);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
}

.sold-out-card h1,
.form-card h1 {
    color: var(--brand-primary);
    font-size: 2rem;
}

.sold-out-card h2,
.form-card h2 {
    color: var(--brand-secondary);
    font-size: 1.5rem;
    margin-top: 1rem;
}

.sold-out-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    justify-content: center;
}

.fake-form {
    display: grid;
    gap: 1rem;
    text-align: left;
    margin-top: 1rem;
}

.fake-form label {
    font-weight: 600;
    color: var(--brand-primary);
}

.fake-form input,
.fake-form select,
.fake-form textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border-radius: 14px;
    border: 1px solid var(--neutral-200);
    font-family: inherit;
    font-size: 1rem;
    background: #ffffff;
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

.fake-form input:focus,
.fake-form select:focus,
.fake-form textarea:focus {
    outline: none;
    border-color: var(--brand-secondary);
    box-shadow: 0 0 0 4px rgba(122, 22, 37, 0.15);
}

.fake-form button {
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.fake-form button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(122, 22, 37, 0.25);
}

.back-home {
    margin-top: 1rem;
}

.container {
    width: min(1120px, 90%);
    margin: 0 auto;
}

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

.top-bar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--neutral-200);
    padding: 0.75rem 0;
}

.logo-pair {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo-pair img {
    max-height: 48px;
    width: auto;
    object-fit: contain;
}

nav {
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--neutral-700);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--brand-secondary);
}

.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url("https://images.unsplash.com/photo-1491557345352-5929e343eb89?auto=format&fit=crop&w=1600&q=80") center/cover no-repeat;
}

.overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient);
}

.hero-content {
    position: relative;
    text-align: center;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 700;
}

.hero-content p {
    font-size: 1.25rem;
    font-weight: 400;
}

.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2.5rem;
    background: var(--brand-secondary);
    color: #ffffff;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(122, 22, 37, 0.3);
}

.secondary {
    background: var(--brand-primary);
}

.section {
    padding: 5rem 0;
}

.section h2 {
    font-size: 2rem;
    color: var(--brand-primary);
    margin-bottom: 1.5rem;
}

.section p {
    margin-bottom: 1rem;
}

.alt {
    background: #ffffff;
}

.callout {
    background: var(--accent);
    color: #1f1f1f;
}

.callout .cta {
    background: rgba(0, 30, 97, 0.9);
}

.two-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.sessions-grid article {
    background: rgba(255, 255, 255, 0.92);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 12px 32px rgba(0, 30, 97, 0.08);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sessions-grid h3 {
    font-size: 1.5rem;
    color: var(--brand-secondary);
}

.sessions-grid ul {
    list-style: none;
    display: grid;
    gap: 0.65rem;
    margin-top: 0.5rem;
}

.sessions-grid li {
    font-weight: 600;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2.5rem;
}

.speaker-card {
    align-items: center;
    text-align: center;
}

.speaker-card img {
    width: 112px;
    height: 112px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 12px 24px rgba(0, 30, 97, 0.15);
}

.speaker-role {
    font-weight: 700;
    color: var(--brand-secondary);
}

.card {
    background: #ffffff;
    border-radius: 16px;
    padding: 1.75rem;
    box-shadow: 0 8px 24px rgba(0, 30, 97, 0.06);
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.25rem;
    color: var(--brand-primary);
    margin-bottom: 0.75rem;
}

.grid-cols {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.footer {
    background: #0b1739;
    color: #e4e7ec;
    padding: 1.5rem 0;
}

.footer p {
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    nav {
        display: none;
    }
    .top-bar {
        padding: 1rem 0;
    }
    .flex-between {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero {
        min-height: 60vh;
    }
    .hero-content h1 {
        font-size: clamp(2rem, 6vw, 2.75rem);
    }
    .callout .flex-between {
        gap: 1.5rem;
    }
}