/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* BNI Brand Colors */
:root {
    --bni-red: #E31837;
    --bni-dark: #1a1a1a;
    --bni-gold: #FFD700;
    --light-gray: #f8f9fa;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --white: #ffffff;
    --gradient-bg: linear-gradient(135deg, #E31837 0%, #B01429 100%);
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 5px 25px rgba(0,0,0,0.15);
    --shadow-heavy: 0 10px 40px rgba(0,0,0,0.2);
    --text-color: #333;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--bni-dark);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-bg);
    margin: 1rem auto;
    border-radius: 2px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-light);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--bni-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--bni-red);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--bni-red);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.register-btn {
    background: var(--gradient-bg);
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.register-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.register-btn::after {
    display: none;
}

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--bni-dark);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23E31837" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: slideInLeft 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--bni-dark);
}

.highlight {
    color: var(--bni-red);
    text-shadow: 2px 2px 4px rgba(227, 24, 55, 0.3);
}

.bni-red {
    color: var(--bni-red);
    font-size: 4rem;
    display: block;
    text-shadow: 2px 2px 4px rgba(227, 24, 55, 0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    animation: slideInRight 1s ease;
}

.event-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
    transition: transform 0.3s ease;
}

.event-image:hover {
    transform: scale(1.02);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

.btn-secondary {
    background: transparent;
    color: var(--bni-red);
    border: 2px solid var(--bni-red);
}

.btn-secondary:hover {
    background: var(--bni-red);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-full {
    width: 100%;
}

/* Event Info Section */
.event-info {
    padding: 5rem 0;
    background: white;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.info-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    text-align: center;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    border-color: var(--bni-red);
}

.info-card i {
    font-size: 2.5rem;
    color: var(--bni-red);
    margin-bottom: 1rem;
}

.info-card h3 {
    color: var(--bni-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.info-card p {
    color: var(--medium-gray);
    line-height: 1.6;
}

.info-card strong {
    color: var(--bni-red);
}

/* Parking Info */
.parking-info {
    padding: 3rem 0;
    background: var(--light-gray);
}

.parking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.parking-option {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: transform 0.3s ease;
}

.parking-option:hover {
    transform: translateY(-3px);
}

.parking-option i {
    font-size: 2rem;
    color: var(--bni-red);
    margin-bottom: 1rem;
}

/* Design Element Section */
.design-section {
    padding: 3rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

.design-content {
    text-align: center;
}

.design-image {
    display: inline-block;
}

.design-photo {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border: 3px solid var(--bni-red);
    opacity: 0.8;
    transition: all 0.3s ease;
}

.design-photo:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* Speakers Section */
.speakers {
    padding: 5rem 0;
    background: white;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.speaker-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.3s ease;
}

.speaker-card {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    border-color: var(--bni-red);
}

.speaker-card-link:hover .speaker-card {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    border-color: var(--bni-red);
    cursor: pointer;
}

.speaker-card-coming {
    opacity: 0.8;
    position: relative;
}

.speaker-card-coming::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    border-left: 30px solid transparent;
    border-top: 30px solid #ffc107;
    z-index: 1;
}

.speaker-info h3 {
    color: var(--bni-red);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.speaker-info h4 {
    color: var(--bni-dark);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.speaker-info p {
    color: var(--medium-gray);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.visit-website {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--bni-red);
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #f0f0f0;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.speaker-card-link:hover .visit-website {
    opacity: 1;
    transform: translateY(0);
}

.visit-website i {
    font-size: 0.7rem;
}

.website-coming {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #ffc107;
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #f0f0f0;
}

.website-coming i {
    font-size: 0.7rem;
}

/* Registration Section */
.registration {
    padding: 5rem 0;
    background: var(--light-gray);
}

.registration-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.registration-info h3 {
    color: var(--bni-dark);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.registration-description {
    color: var(--medium-gray);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 0;
}

.additional-info {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

.additional-info p {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.registration-deadline {
    background: linear-gradient(135deg, #fff5f5, #ffe5e5);
    border-left: 4px solid var(--bni-red);
    padding: 1rem 1.5rem;
    margin-top: 1.5rem;
    border-radius: 8px;
}

.registration-deadline p {
    margin: 0;
    font-size: 1rem;
}

.registration-deadline p:first-child {
    color: var(--bni-red);
    margin-bottom: 0.5rem;
}

.registration-deadline em {
    color: var(--medium-gray);
    font-style: italic;
}

.registration-form {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.registration-form h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--bni-dark);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
    background-color: white;
    cursor: pointer;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 3rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--bni-red);
}

.form-group select:focus {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c41e3a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
}

.form-group small {
    color: var(--medium-gray);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    display: block;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--medium-gray);
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.privacy-link {
    color: var(--bni-red);
    text-decoration: underline;
    transition: color 0.3s ease;
}

.privacy-link:hover {
    color: var(--bni-dark);
}

.privacy-modal {
    text-align: left;
}

.privacy-icon {
    font-size: 3rem;
    color: var(--bni-red);
    margin-bottom: 1rem;
    text-align: center;
    display: block;
}

.privacy-content {
    max-height: 400px;
    overflow-y: auto;
    padding-right: 1rem;
}

.privacy-content h4 {
    color: var(--bni-dark);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.privacy-content h4:first-child {
    margin-top: 0;
}

.privacy-content ul {
    margin-left: 1rem;
    margin-bottom: 1rem;
}

.privacy-content li {
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.contact-info {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    text-align: center;
}

.contact-info a {
    color: var(--bni-red);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Location Section */
.location {
    padding: 5rem 0;
    background: white;
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.location-info h3 {
    color: var(--bni-red);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.location-info p {
    margin-bottom: 0.5rem;
    color: var(--medium-gray);
}

.location-info i {
    color: var(--bni-red);
    margin-right: 0.5rem;
}

.directions {
    margin-top: 2rem;
}

.directions h4 {
    color: var(--bni-dark);
    margin-bottom: 1rem;
}

.directions ul {
    list-style: none;
    padding-left: 0;
}

.directions li {
    margin-bottom: 0.5rem;
    color: var(--medium-gray);
    position: relative;
    padding-left: 1.5rem;
}

.directions li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--bni-red);
    font-weight: bold;
}

.location-map iframe {
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
}

/* Footer */
.footer {
    background: var(--bni-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--bni-red);
    margin-bottom: 1rem;
}

.footer-logo {
    height: 40px;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--bni-red);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: var(--medium-gray);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

.modal-body {
    padding: 3rem 2rem;
    text-align: center;
}

.success-icon {
    font-size: 4rem;
    color: #28a745;
    margin-bottom: 1rem;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: black;
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-container {
        padding: 0.75rem 1rem;
    }

    .logo {
        height: 40px;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero {
        padding-top: 70px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .bni-red {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .registration-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .location-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .speakers-grid {
        grid-template-columns: 1fr;
    }

    .design-photo {
        width: 150px;
        height: 150px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .bni-red {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .nav-container {
        padding: 0.5rem 0.75rem;
    }

    .logo {
        height: 35px;
    }

    .nav-menu {
        top: 55px;
    }

    .hero {
        padding-top: 65px;
    }

    .info-card,
    .speaker-card {
        padding: 1.5rem;
    }

    .registration-form {
        padding: 1.5rem;
    }
}

/* Print Styles */
@media print {
    .header, .registration, .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
}