/* CSS Custom Properties */
:root {
    --color-primary: #06b6d4; /* cyan accent */
    --color-primary-dark: #0891b2;
    --color-secondary: #6366f1; /* indigo secondary */
    --color-accent: #f59e0b;
    --color-background: #0f172a; /* dark navy */
    --color-surface: #1e293b; /* elevated panel */
    --color-text: #f1f5f9;
    --color-text-light: #94a3b8;
    --color-border: #334155;
    
    --font-family-base: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-family-heading: 'Inter', system-ui, sans-serif;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition-base: all 0.2s ease-in-out;
    --transition-colors: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

/* Modern CSS Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
}

html {
        background: rgba(255,255,255,0.04);
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: radial-gradient(circle at 20% 20%, #1e293b 0%, #0f172a 55%);
    overflow-x: hidden;
    min-height: 100vh;
}

img, picture, video, canvas, svg {
        color: #fff;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
}

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    color: var(--color-text);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: var(--font-size-base);
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--full-width {
    width: 100%;
}

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-base);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav__logo h2 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.nav__list {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav__link {
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 500;
    transition: var(--transition-colors);
    position: relative;
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-primary);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-text-light);
    margin: 3px 0;
    transition: var(--transition-base);
}

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

.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.9) 0%,
        rgba(30, 41, 59, 0.8) 50%,
        rgba(6, 182, 212, 0.3) 100%
    );
    z-index: -1;
}

.hero__content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: var(--spacing-xl);
    z-index: 1;
}

.hero__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero__description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    line-height: 1.7;
}

.hero__date-time {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-xl);
    display: inline-block;
}

.hero__date-time time {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.hero__actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero Enhancements */
.hero__badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-md);
}
.hero-badge {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
    padding: 0.4rem 0.75rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.5px;
}
.hero__fomo-ribbon {
    background: linear-gradient(90deg, var(--color-accent) 0%, #ffb347 100%);
    color: #1e293b;
    padding: 0.5rem 0.9rem;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    margin: var(--spacing-md) 0 var(--spacing-lg);
    display: inline-block;
    box-shadow: var(--shadow-md);
}
.hero__fomo-ribbon.ribbon-hot {
    background: linear-gradient(90deg, #f97316 0%, #fb923c 100%);
    color: #fff;
}
.hero__fomo-ribbon.ribbon-critical {
    background: linear-gradient(90deg, #dc2626 0%, #ef4444 100%);
    color: #fff;
    animation: pulse-critical 1.5s infinite;
}
@keyframes pulse-critical {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}
.hero__value-points {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) auto var(--spacing-md);
    max-width: 760px;
    display: grid;
    gap: var(--spacing-sm);
}
.hero__value-points li {
    position: relative;
    padding-left: 1.5rem;
    color: #fff;
    font-size: var(--font-size-base);
}
.hero__value-points li::before {
    content: '›';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent);
    font-weight: 700;
}
.hero__micro-cta {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: #fff;
    margin-bottom: var(--spacing-lg);
}

/* Details Section */
.details {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-surface);
}

.details__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-xl);
}
@media (min-width: 1000px) {
    .details__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.detail-card {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    /* Slightly reduced padding to allow four cards in one row */
    padding: var(--spacing-lg) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-base);
}

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

.detail-card__icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}
.detail-card__icon svg {
    display: block;
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-sm);
    color: var(--color-primary);
}

.detail-card__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.detail-card__content {
    color: var(--color-text-light);
    line-height: 1.6;
}

.detail-card__content strong {
    color: var(--color-text);
    font-weight: 600;
}

.detail-card__content small {
    color: var(--color-secondary);
    font-size: var(--font-size-sm);
}

/* Agenda Section */
.agenda {
    padding: var(--spacing-4xl) 0;
    background-color: white;
}

/* Darker agenda headline for reduced brightness */
.agenda .section-title {
    color: #1a202c;
}

.agenda__timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.agenda__timeline::before {
    content: '';
    position: absolute;
    left: 80px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
}

.agenda__item {
    display: flex;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.agenda__item::before {
    content: '';
    position: absolute;
    left: 72px;
    top: 8px;
    width: 18px;
    height: 18px;
    background-color: var(--color-primary);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.agenda__time {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    min-width: 100px;
    padding-top: var(--spacing-xs);
}

.agenda__content {
    margin-left: var(--spacing-xl);
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    flex: 1;
}

.agenda__content h3 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.agenda__content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

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

.agenda__content small {
    color: var(--color-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* Location Section */
.location {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-surface);
}

.location__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.location__info h3 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.location__info address {
    font-style: normal;
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

.location__transport,
.location__parking {
    margin-bottom: var(--spacing-xl);
}

.location__transport h4,
.location__parking h4 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.location__transport ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.location__transport li {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-lg);
    position: relative;
}

.location__transport li::before {
    content: '🚇';
    position: absolute;
    left: 0;
}

.location__parking p {
    color: var(--color-text-light);
    line-height: 1.6;
}

.location__map {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.map-placeholder {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: var(--transition-base);
}

.map-placeholder:hover {
    transform: scale(1.02);
}

.map-placeholder p:first-child {
    font-size: var(--font-size-4xl);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);

@media (min-width: 1100px) {
    /* Force exactly four columns on wider screens */
    .details__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}
}

.map-placeholder p:nth-child(2) {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.map-placeholder small {
    opacity: 0.9;
}

/* Registration Section */
.register {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.register__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.register__info h3 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.benefits-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.benefits-list li {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
    position: relative;
    line-height: 1.6;
}

.benefits-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    top: 0;
}

/* Value Proposition Section */
.value-prop {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f766e 100%);
    color: #fff;
    padding: var(--spacing-4xl) 0;
}
.value-prop .section-title {
    color: #fff;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}
.value-prop__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-xl);
}
.value-card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(6px);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255,255,255,0.12);
    position: relative;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
}
.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(255,255,255,0.3);
}
.value-card__icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}
.value-card__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}
.value-card__text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}
.value-card__bullets {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}
.value-card__bullets li {
    position: relative;
    padding-left: 1rem;
}
.value-card__bullets li::before {
    content: '•';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent);
}

/* Registration FOMO Enhancements */
.register__fomo {
    margin-top: var(--spacing-lg);
    font-weight: 600;
    /* Stronger contrast without max brightness */
    color: #1f2937;
    font-size: var(--font-size-base);
    opacity: 1;
}
.register__intro {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: #1f2937;
}
.register__note {
    display: block;
    margin-top: var(--spacing-md);
    color: #374151;
}
.register__link-container p,
.register__link-container strong {
    color: #1f2937;
}

/* Registration Buttons */
.registration-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.btn--registration {
    flex: 1;
    min-width: 200px;
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
    border: 2px solid var(--color-primary);
}

.btn--registration:hover {
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
    transform: translateY(-3px);
}

@media (min-width: 768px) {
    .registration-buttons {
        flex-direction: row;
        gap: var(--spacing-lg);
    }
}

/* Form Styles */
.registration-form {
    background: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

/* ================= Debug Visibility Patch (temporary) ================= */
main, .main-content, section, .container {
    opacity: 1;
    visibility: visible;
}
.hero__overlay { pointer-events: none; }
.hero__content { position: relative; z-index: 2; }
.hero__background { z-index: 0; }
section { position: relative; z-index: 1; }
/* Remove accidental background inheritance from universal selector previously applied */
section, .container, .detail-card, .value-card {
    background: transparent;
}
/* Ensure text visible on dark background */
.value-prop .value-card__text, .value-prop .value-card__title, .value-prop .value-card__bullets li { color: #fff; }
/* ===================================================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-background);
    color: var(--color-text);
    font-size: var(--font-size-base);
    transition: var(--transition-colors);
}

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

.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkbox-group label {
    margin: 0;
    font-weight: normal;
    cursor: pointer;
}

/* Footer */
.site-footer {
    background-color: var(--color-background);
    border-top: 1px solid var(--color-border);
    color: var(--color-text);
    padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer__info h3 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.footer__info p {
    color: #cbd5e1;
    line-height: 1.6;
}

.footer__links h4 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer__links ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer__links li {
    margin-bottom: var(--spacing-xs);
}

.footer__links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: var(--transition-colors);
}

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

.footer__bottom {
    border-top: 1px solid #374151;
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer__bottom p {
    color: #9ca3af;
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav__list {
        display: none;
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .hero__title {
        font-size: var(--font-size-3xl);
    }
    
    .hero__actions {
        flex-direction: column;
        align-items: center;
    }
    
    .details__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .agenda__timeline::before {
        left: 20px;
    }
    
    .agenda__item::before {
        left: 12px;
    }
    
    .agenda__time {
        min-width: 60px;
        font-size: var(--font-size-base);
    }
    
    .agenda__content {
        margin-left: var(--spacing-lg);
    }
    
    .location__grid,
    .register__content,
    .footer__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero__content {
        padding: var(--spacing-lg);
    }
    
    .hero__title {
        font-size: var(--font-size-2xl);
    }
    
    .hero__date-time {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .agenda__time {
        min-width: 50px;
        font-size: var(--font-size-sm);
    }
    
    .detail-card {
        padding: var(--spacing-lg);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__content > * {
    animation: fadeInUp 0.6s ease-out forwards;
}

.hero__title {
    animation-delay: 0.1s;
}

.hero__subtitle {
    animation-delay: 0.2s;
}

.hero__description {
    animation-delay: 0.3s;
}

.hero__date-time {
    animation-delay: 0.4s;
}

.hero__actions {
    animation-delay: 0.5s;
}

/* Form validation styles */
.form-group input.error,
.form-group select.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: block;
}

.success-message {
    background: linear-gradient(135deg, var(--color-success), #059669);
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.success-message h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.error-banner {
    background-color: var(--color-error);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-weight: 600;
}

/* Mobile navigation styles */
@media (max-width: 768px) {
    .nav__list {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
    }
    
    .nav__list--open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav__toggle--open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav__toggle--open span:nth-child(2) {
        opacity: 0;
    }
    
    .nav__toggle--open span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .nav-open {
        overflow: hidden;
    }
}

/* Speakers Section */
.speakers {
    padding: var(--spacing-4xl) 0;
    background: var(--color-surface);
}

.speakers__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.speaker-card {
    background: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-base);
}

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

.speaker-card__image {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.speaker-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-border);
    transition: var(--transition-base);
}

.speaker-card:hover .speaker-image {
    border-color: var(--color-primary);
}

.speaker-card__name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.speaker-card__role {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.speaker-card__bio {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.speaker-card__linkedin {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-md);
    transition: var(--transition-colors);
}

.speaker-card__linkedin:hover {
    background: var(--color-primary);
    color: var(--color-background);
}

.speaker-card__session {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.speaker-card__session small {
    color: var(--color-text-light);
    font-style: italic;
}

/* Responsive adjustments for speakers */
@media (max-width: 768px) {
    .speakers__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .speaker-card {
        padding: var(--spacing-lg);
    }
    
    .speaker-image {
        width: 100px;
        height: 100px;
    }
}

/* Focus styles for accessibility */
.btn:focus,
input:focus,
select:focus,
.nav__link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}