/* DevPortfolio-inspired Design for EEG-fMRI Workshop */

/* Password Gate Styles */
.password-gate {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1269C7 0%, #0a4a8a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.password-gate.hidden {
    display: none;
}

.password-container {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.password-container h2 {
    color: #1269C7;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.password-container p {
    color: #666;
    margin-bottom: 1.5rem;
}

.password-container input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    margin-bottom: 1rem;
    transition: border-color 0.3s;
}

.password-container input:focus {
    outline: none;
    border-color: #1269C7;
}

.password-container button {
    width: 100%;
    padding: 1rem;
    background: #1269C7;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
}

.password-container button:hover {
    background: #0a4a8a;
    transform: translateY(-2px);
}

.password-container button:active {
    transform: translateY(0);
}

.error-message {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    min-height: 1.2rem;
}

:root {
    --primary-blue: #1269C7;
    --primary-blue-dark: #0f5aa8;
    --primary-blue-light: #3D8FD1;
    --bg-light: #F5F5F7;
    --bg-white: #FFFFFF;
    --text-dark: #1D1D1F;
    --text-gray: #6B7280;
    --text-light: #86868B;
    --athens-gold: #D4AF37;
    --border-gray: #E5E7EB;
    --shadow-soft: 0 4px 20px rgba(18, 105, 199, 0.08);
    --shadow-medium: 0 10px 40px rgba(18, 105, 199, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

/* Hero Section with Banner */
.hero {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.hero-banner {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.1s ease-out;
    will-change: transform;
}

/* Navigation Inside Hero Banner */
.hero-nav {
    position: absolute;
    top: 4%;
    left: 0;
    right: 0;
    z-index: 100;
    width: 100%;
    padding: 0 2rem;
    animation: fadeInDown 1s ease-out;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Mobile Menu Toggle - Hidden by default on desktop, visible on scroll or always on mobile */
.mobile-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1001;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.scroll-visible {
    display: flex;
}

.menu-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover .menu-icon {
    transform: scale(1.1);
    opacity: 0.8;
}

.hero-nav-list {
    position: fixed;
    top: 5rem;
    right: -100%;
    width: auto;
    min-width: 180px;
    background: transparent;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-end;
    gap: 0.5rem;
    padding: 1rem 0;
    transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1000;
    list-style: none;
}

.hero-nav-list.active {
    right: 1.5rem;
}

.hero-nav-list li {
    list-style: none;
}

/* Desktop: Horizontal navigation by default */
@media (min-width: 769px) {
    .hero-nav-list {
        position: static;
        width: auto;
        background: transparent;
        flex-direction: row;
        gap: 2.5rem;
        padding: 0;
        transition: none;
        align-items: center;
        justify-content: center;
    }
    
    .hero-nav-link {
        background: transparent !important;
        backdrop-filter: none !important;
        box-shadow: none !important;
        font-size: clamp(14px, 2.2vw, 32px) !important;
        padding: 0 !important;
        border-radius: 0 !important;
        text-shadow: none !important;
        font-weight: 600 !important;
        letter-spacing: 0.5px !important;
        transition: all 0.3s ease !important;
    }
    
    .hero-nav-link:hover {
        background: transparent !important;
        color: var(--primary-blue-light) !important;
        transform: scale(1.05) !important;
        box-shadow: none !important;
    }
    
    /* Desktop hamburger menu (appears on scroll) */
    .hero-nav-list.mobile-menu-active {
        position: fixed;
        top: 5rem;
        right: -300px;
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem 0;
        background: transparent;
        width: auto;
        min-width: 180px;
        align-items: flex-end;
        transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    
    .hero-nav-list.mobile-menu-active.active {
        right: 1.5rem;
    }
    
    .hero-nav-list.mobile-menu-active .hero-nav-link {
        color: var(--primary-blue) !important;
        background: transparent !important;
        backdrop-filter: none !important;
        box-shadow: none !important;
        padding: 0.5rem 0 !important;
        border-radius: 0 !important;
        font-size: clamp(16px, 2vw, 24px) !important;
        font-weight: 600 !important;
        letter-spacing: 0.5px !important;
        display: inline-block !important;
        text-align: right !important;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3) !important;
    }
    
    .hero-nav-list.mobile-menu-active .hero-nav-link:hover {
        color: var(--primary-blue-light) !important;
        background: transparent !important;
        transform: scale(1.05) !important;
        box-shadow: none !important;
    }
}

.hero-nav-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: clamp(14px, 2.2vw, 32px);
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

/* Menu social icons */
.mobile-social-clone {
    position: static;
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(18, 105, 199, 0.3);
}

.mobile-social-clone .hero-social-link {
    color: var(--primary-blue);
    background: transparent;
    backdrop-filter: none;
    padding: 0.25rem;
    border-radius: 0;
    width: auto;
    height: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: none;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-size: clamp(20px, 3vw, 24px);
}

.mobile-social-clone .hero-social-link:hover {
    color: var(--primary-blue-light);
    background: transparent;
    transform: scale(1.1);
    box-shadow: none;
}

.mobile-social-clone .social-icon {
    font-size: 28px;
    opacity: 0.9;
}

.mobile-social-clone .social-icon:hover {
    opacity: 1;
}

/* Social Media Icons at Bottom of Banner */
.hero-social {
    position: absolute;
    bottom: 3%;
    left: calc(3% + 4.5 * clamp(20px, 2.5vw, 36px));
    display: flex;
    gap: 1.2vw;
    z-index: 10;
    animation: fadeInUp 1.2s ease-out;
}

.social-icon {
    color: white;
    font-size: clamp(20px, 2.5vw, 36px);
    transition: all 0.3s ease;
}

.social-icon:hover {
    color: var(--primary-blue-light);
    transform: scale(1.1);
}

/* Section Layouts */
.section {
    padding: 4rem 2rem;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .section {
        padding: 6rem 4rem;
    }
    
    .section-grid {
        grid-template-columns: 1fr 2fr;
        gap: 4rem;
        align-items: start;
    }
    
    .section-header-col {
        position: sticky;
        top: 100px;
    }
}

.section-title {
    font-size: clamp(32px, 4vw, 64px);
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.1;
}

.section-underline {
    width: 75px;
    height: 5px;
    margin-top: 0.5rem;
    background-color: var(--primary-blue);
    border-radius: 10px;
}

.large-text {
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

/* Info Compact */
.info-compact {
    margin: 2rem 0;
}

.info-item {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.5rem 0;
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
}

.info-item .info-label {
    font-weight: 600;
    color: var(--primary-blue);
    min-width: 170px;
    flex-shrink: 0;
}

.info-item .info-value {
    font-weight: 400;
    color: var(--text-gray);
}

/* Features Compact */
.features-compact {
    margin-top: 2.5rem;
}

.features-compact .features-title {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

.features-compact .features-list {
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
    color: var(--text-gray);
}

.features-list li::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-gray);
    margin-right: 1rem;
    margin-top: 0.5rem;
    flex-shrink: 0;
}

/* Timeline for Program */
.timeline {
    position: relative;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

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

.timeline-marker {
    position: absolute;
    left: 50%;
    top: -0.5rem;
    width: 19px;
    height: 19px;
    background: var(--bg-white);
    border: 2.5px solid var(--primary-blue);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 20;
}

.timeline-item:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 2px;
    height: 48px;
    background: #D1D5DB;
    transform: translateX(-50%) translateY(100%);
    z-index: 10;
}

.program-card {
    padding: 2rem 0;
    transition: transform 0.3s ease, filter 0.3s ease;
    transform-origin: center center;
    cursor: pointer;
}

.program-card:hover {
    transform: scale(1.05);
    filter: brightness(1.05);
}

.program-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    .program-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.program-title {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 600;
    color: var(--primary-blue);
}

.program-subtitle {
    font-size: clamp(16px, 1.8vw, 20px);
    color: var(--primary-blue);
    margin-top: 0.25rem;
}

.program-date {
    font-size: clamp(14px, 1.5vw, 18px);
    color: var(--text-light);
}

.program-list {
    list-style: none;
    padding: 0;
}

.program-list li {
    padding: 0.5rem 0;
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
    color: var(--text-gray);
}

/* Speakers List */
.speaker-list {
    margin-bottom: 2rem;
}

.speaker-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #1269C7;
}

.speaker-item:last-child {
    border-bottom: none;
}

.speaker-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.speaker-photo {
    width: 86px;
    height: 86px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.speaker-photo:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(18, 105, 199, 0.5), 0 4px 12px rgba(0, 0, 0, 0.15);
}

.speaker-name {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 600;
    color: var(--text-dark);
}

.speaker-bio {
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
    color: var(--text-gray);
    margin: 0;
}

.speakers-note {
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
    color: var(--text-gray);
    font-style: italic;
    margin-top: 1rem;
}

/* Venue Section */
.venue-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.venue-subtitle {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    margin-top: 1rem;
}

.venue-address {
    font-size: clamp(16px, 1.8vw, 20px);
    color: var(--text-gray);
    margin: 0 0 1rem 0;
    font-style: italic;
}

.venue-images {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 1rem 0;
}

.venue-image {
    width: 100%;
    aspect-ratio: 2 / 1;
    object-fit: cover;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.venue-image:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.venue-map {
    margin: 1rem 0;
}

/* Registration Compact */
.registration-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.registration-fee {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
}

.fee-label {
    font-weight: 600;
    color: var(--primary-blue);
}

.fee-amount {
    font-weight: 600;
    color: var(--text-gray);
}

.registration-includes {
    margin-top: 0;
    margin-bottom: 0;
}

.includes-title {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

.includes-list {
    list-style: none;
    padding: 0;
}

.includes-list li {
    padding: 0;
    font-size: clamp(18px, 2vw, 24px);
    line-height: 1.6;
    color: var(--text-gray);
}

.btn-register {
    display: inline-block;
    background: var(--primary-blue);
    color: white;
    text-decoration: none;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-size: clamp(16px, 1.8vw, 20px);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0;
    width: fit-content;
    animation: pulse 2s ease-in-out infinite;
}

.btn-register:hover {
    background: var(--primary-blue-dark);
    transform: scale(1.02);
    animation: none;
}

.registration-note {
    font-size: clamp(16px, 1.8vw, 20px);
    line-height: 1.6;
    color: var(--text-gray);
    margin-top: 0;
    font-style: italic;
}

/* Interest Summary */
.interest-summary-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.interest-category {
    position: relative;
    padding: 1.5rem 0;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease, transform 0.3s ease;
}

.interest-category.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.interest-category:hover {
    transform: scale(1.05);
    filter: brightness(1.05);
}

.interest-category:last-child {
    margin-bottom: 0;
}

.interest-category-marker {
    position: absolute;
    left: 50%;
    top: -0.5rem;
    width: 19px;
    height: 19px;
    background: var(--bg-white);
    border: 2.5px solid var(--primary-blue);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 20;
}

.interest-category:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 2px;
    height: 48px;
    background: #D1D5DB;
    transform: translateX(-50%) translateY(100%);
    z-index: 10;
}

.interest-category-title {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.interest-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.interest-item {
    position: relative;
    display: flex;
    align-items: center;
    height: 40px;
    font-size: clamp(15px, 1.7vw, 18px);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.interest-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: rgba(18, 105, 199, 0.9);
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(18, 105, 199, 0.15);
    transition: width 0.5s ease;
}

.interest-label {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    padding-left: 0.75rem;
    padding-right: 1rem;
    color: rgba(18, 105, 199, 1);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Single bar with scale */
.interest-scale-bar {
    position: relative;
    height: 40px;
    border-radius: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.interest-scale-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    transition: background 0.5s ease;
}

.interest-scale-ticks {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    padding: 0 0.5rem;
    font-size: clamp(15px, 1.7vw, 18px);
    font-weight: 500;
    color: var(--text-gray);
}

@media (max-width: 768px) {
    .interest-item {
        font-size: clamp(13px, 3vw, 15px);
    }
    
    .interest-label {
        padding-left: 0.5rem;
    }
}

/* Footer */
.footer {
    background: var(--bg-light);
    border-top: 1px solid var(--border-gray);
    padding: 3rem 2rem;
}

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

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

.footer-info {
    text-align: center;
}

@media (min-width: 768px) {
    .footer-info {
        text-align: left;
    }
}

.footer-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.footer-subtitle {
    font-size: 16px;
    color: var(--text-gray);
}

.footer-social {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.footer-social-link {
    color: var(--primary-blue);
    font-size: 24px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.footer-social-link:hover {
    color: var(--primary-blue-light);
    transform: translateY(-3px);
}

.footer-copyright {
    text-align: center;
}

.footer-copyright p {
    font-size: 14px;
    color: var(--text-light);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(18, 105, 199, 0.4);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 0 0 0 8px rgba(18, 105, 199, 0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex !important;
        position: absolute;
        top: auto;
        bottom: -60px;
        right: 1.5rem;
    }
    
    .hero-nav-list {
        position: fixed;
        top: 5rem;
        right: -300px;
        width: auto;
        min-width: 180px;
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem 0;
        align-items: flex-end;
        background: transparent;
        transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    
    .hero-nav-list .hero-nav-link {
        color: var(--primary-blue) !important;
        font-size: clamp(16px, 4vw, 20px) !important;
        font-weight: 600 !important;
        letter-spacing: 0.5px !important;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3) !important;
        background: transparent !important;
        padding: 0.5rem 0 !important;
    }
    
    .hero-nav-list .hero-nav-link:hover {
        color: var(--primary-blue-light) !important;
        transform: scale(1.05) !important;
    }
    
    .hero-nav-list.active {
        right: 1.5rem;
    }
    
    .hero {
        height: 50vh;
        min-height: 350px;
        max-height: 500px;
    }
    
    .hero-nav {
        top: 1rem;
    }
}
    
    .section {
        padding: 3rem 1.5rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .speakers-grid {
        grid-template-columns: 1fr;
    }
    
    .registration-box {
        padding: 2rem 1.5rem;
    }
    
    .timeline-marker {
        left: 0;
        transform: translateX(0);
    }
    
    .timeline-item:not(:last-child)::after {
        left: 7px;
        transform: none;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

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