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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: "Google Sans Flex", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    font-variation-settings:
        "slnt" 0,
        "wdth" 100,
        "GRAD" 0,
        "ROND" 0;
    overflow-x: hidden;
}

/* Touch-friendly interactions */
button, a, .tab-btn, .faq-question {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

@media (max-width: 768px) {
    button, .tab-btn {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 40px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 0.95rem;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.login-btn {
    background: white;
    color: #333;
    border: none;
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 0.95rem;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s;
}

.login-btn:hover {
    background: #f0f0f0;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
}

/* Landing Section */
.landing-section {
    width: 100%;
    min-height: 100vh;
    background-image: url('background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    position: relative;
    padding: 20px 40px;
}


.landing-content {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.event-details-card {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 50px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.hero-text {
    color: black;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 400;
    color: black;
}

.hero-text p {
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 500px;
    opacity: 0.95;
    color: black;
}

/* Feature Cards */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.feature-card:first-child {
    grid-column: 1 / -1;
}

.feature-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 12px;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.feature-card p {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.4;
}

/* Responsive Design - Landing Section */
@media (max-width: 1024px) {
    .landing-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-text h1 {
        font-size: 2.8rem;
    }

    .feature-cards {
        max-width: 600px;
        margin: 0 auto;
    }

    .event-details-card {
        padding: 40px;
    }
}

@media (max-width: 768px) {
    .landing-section {
        padding: 60px 20px 40px;
        min-height: auto;
    }

    .hero-text {
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }

    .hero-text p {
        font-size: 1rem;
        margin: 0 auto;
    }

    .feature-cards {
        grid-template-columns: 1fr;
    }

    .feature-card:first-child {
        grid-column: 1;
    }

    .feature-card {
        padding: 24px;
    }

    .feature-card h3 {
        font-size: 1.1rem;
    }

    .feature-card p {
        font-size: 0.9rem;
    }

    .event-details-card {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .landing-section {
        padding: 40px 16px;
    }

    .hero-text h1 {
        font-size: 1.8rem;
    }

    .hero-text p {
        font-size: 0.9rem;
    }

    .feature-card {
        padding: 20px;
    }

    .feature-card h3 {
        font-size: 1rem;
    }

    .feature-card p {
        font-size: 0.85rem;
    }

    .event-details-card {
        padding: 24px;
    }
}

/* Why Attend Section */
.why-attend-section {
    background: #1a1a1a;
    padding: 120px 120px;
}

.why-attend-container {
    max-width: 1400px;
    margin: 0 auto;
}

.why-attend-title {
    font-size: 1rem;
    letter-spacing: 0.2em;
    color: #999;
    margin-bottom: 80px;
    font-weight: 400;
}

.why-attend-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
}

.why-attend-card {
    color: white;
}

.why-attend-card:first-child {
    grid-column: 1 / -1;
}

.why-attend-card h3 {
    font-size: 2.4rem;
    margin-bottom: 1.5rem;
    font-weight: 400;
    line-height: 1.2;
}

.why-attend-card p,
.why-attend-card ul,
.why-attend-card li {
    font-size: 1.25rem;
    line-height: 1.7;
    color: #d0d0d0;
}

.why-attend-button-container {
    text-align: center;
    margin-top: 60px;
}

.why-attend-button {
    background: white;
    color: #1a1a1a;
    border: none;
    padding: 16px 50px;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.why-attend-button:hover {
    background: #f0f0f0;
}

/* Responsive Why Attend Section */
@media (max-width: 1024px) {
    .why-attend-grid {
        gap: 50px;
    }

    .why-attend-card h3 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .why-attend-section {
        padding: 80px 20px;
    }

    .why-attend-title {
        margin-bottom: 60px;
    }

    .why-attend-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .why-attend-card:first-child {
        grid-column: 1;
    }

    .why-attend-card h3 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .why-attend-card p {
        font-size: 1.15rem;
    }

    .why-attend-button {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .why-attend-section {
        padding: 60px 16px;
    }

    .why-attend-title {
        font-size: 0.9rem;
        margin-bottom: 40px;
    }

    .why-attend-grid {
        gap: 40px;
    }

    .why-attend-card h3 {
        font-size: 1.6rem;
    }

    .why-attend-card p {
        font-size: 1.05rem;
        line-height: 1.6;
    }

    .why-attend-button-container {
        margin-top: 40px;
    }

    .why-attend-button {
        padding: 14px 40px;
        font-size: 1rem;
    }
}

/* Registration CTA Section */
.registration-cta-section {
    background: #1a1a1a;
    padding: 150px 40px;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.registration-cta-container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.registration-cta-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 80px;
}

.cta-label {
    font-size: 1rem;
    letter-spacing: 0.2em;
    color: #666;
    font-weight: 400;
}

.cta-price {
    font-size: 5rem;
    color: white;
    font-weight: 400;
}

.registration-cta-content h2 {
    font-size: 5rem;
    color: black;
    margin-bottom: 1rem;
    font-weight: 400;
    line-height: 1.1;
}

.cta-link {
    font-size: 5rem;
    color: black;
    text-decoration: none;
    border-bottom: 3px dashed black;
    display: inline-block;
    margin-bottom: 2rem;
    transition: opacity 0.3s ease;
    font-weight: 400;
    line-height: 1.1;
}

.cta-link:hover {
    opacity: 0.8;
}

.cta-note {
    font-size: 2rem;
    color: white;
    margin-top: 2rem;
    font-weight: 400;
}

/* Responsive Registration CTA */
@media (max-width: 1024px) {
    .registration-cta-content h2 {
        font-size: 4rem;
    }

    .cta-link {
        font-size: 4rem;
    }

    .cta-price {
        font-size: 4rem;
    }

    .cta-note {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .registration-cta-section {
        padding: 100px 20px;
    }

    .registration-cta-header {
        margin-bottom: 60px;
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .registration-cta-content h2 {
        font-size: 2.5rem;
    }

    .cta-link {
        font-size: 2.5rem;
        border-bottom: 2px dashed white;
    }

    .cta-price {
        font-size: 3rem;
    }

    .cta-note {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .registration-cta-section {
        padding: 80px 16px;
    }

    .registration-cta-header {
        margin-bottom: 40px;
    }

    .cta-label {
        font-size: 0.9rem;
    }

    .registration-cta-content h2 {
        font-size: 2rem;
    }

    .cta-link {
        font-size: 2rem;
    }

    .cta-price {
        font-size: 2.5rem;
    }

    .cta-note {
        font-size: 1.1rem;
    }
}

/* Footer */
footer {
    background: #000;
    padding: 80px 40px 40px;
    position: relative;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 12rem;
    color: #333;
    font-weight: bold;
    line-height: 0.9;
    margin-bottom: 60px;
    text-transform: lowercase;
}

.footer-bottom {
    color: #666;
    font-size: 0.9rem;
    margin-top: 40px;
    text-align: center;
}

/* Video Section */
.video-section {
    background: white;
    padding: 20px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-container {
    max-width: 1400px;
    width: 100%;
    text-align: center;
}

.video-header {
    font-size: 3.5rem;
    color: #1a1a1a;
    margin-bottom: 60px;
    font-weight: 400;
}

.video-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-wrapper video {
    width: 100%;
    height: 82vh;
    max-width: none;
    border-radius: 20px;
    object-fit: contain;
    transition: transform 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.video-wrapper.locked {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    width: 100%;
    max-width: 1400px;
}

.video-wrapper.locked video {
    transform: scale(0.85);
}

/* Responsive Video Section */
@media (max-width: 1024px) {
    .video-header {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .video-section {
        padding: 5px 20px;
    }

    .video-header {
        font-size: 2rem;
        margin-bottom: 30px;
    }

    .video-wrapper video {
        border-radius: 12px;
        max-width: 100%;
    }

    .video-wrapper.locked {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .video-section {
        padding: 5px 16px;
    }

    .video-header {
        font-size: 1.6rem;
        margin-bottom: 24px;
    }

    .video-wrapper video {
        border-radius: 8px;
    }
}

/* RSVP Section */
.rsvp-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 120px 40px;
}

.rsvp-container {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.rsvp-heading {
    font-size: 3.5rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-weight: 500;
}

.rsvp-subheading {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3.5rem;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.form-wrapper {
    background: white;
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid #e8e8e8;
}

.form-wrapper iframe {
    width: 100%;
    min-height: 450px;
    display: block;
    margin: 0 auto;
}

/* Responsive RSVP Section */
@media (max-width: 1024px) {
    .rsvp-container {
        max-width: 600px;
    }
}

@media (max-width: 768px) {
    .rsvp-section {
        padding: 80px 20px;
    }

    .rsvp-heading {
        font-size: 2.2rem;
    }

    .rsvp-subheading {
        font-size: 1.1rem;
        margin-bottom: 2.5rem;
    }

    .form-wrapper {
        padding: 30px;
        border-radius: 20px;
    }

    .form-wrapper iframe {
        min-height: 450px;
    }
}

@media (max-width: 480px) {
    .rsvp-section {
        padding: 60px 16px;
    }

    .rsvp-heading {
        font-size: 1.8rem;
    }

    .rsvp-subheading {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .form-wrapper {
        padding: 24px;
        border-radius: 16px;
    }

    .form-wrapper iframe {
        min-height: 450px;
    }
}

/* Responsive Footer */
@media (max-width: 1024px) {
    .footer-logo {
        font-size: 10rem;
    }
}

@media (max-width: 768px) {
    footer {
        padding: 60px 20px 30px;
    }

    .footer-logo {
        font-size: 6rem;
        margin-bottom: 30px;
    }

    .footer-bottom {
        margin-top: 30px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    footer {
        padding: 40px 16px 24px;
    }

    .footer-logo {
        font-size: 4rem;
        margin-bottom: 24px;
    }

    .footer-bottom {
        font-size: 0.8rem;
        margin-top: 24px;
    }
}