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

:root {
    /* Caribbean Color Palette */
    --color-orange: #FF9933;
    --color-red: #FF5733;
    --color-cyan: #00BCD4;
    --color-teal: #009688;
    --color-purple: #6B2C91;
    --color-yellow: #FFC107;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-light: #F5F7FA;
    --color-gray: #8B95A5;
    --color-gray-dark: #2D3748;
    --color-black: #1A202C;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-gray-dark);
    background-color: var(--color-white);
}

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

/* ========================================
   Navigation
   ======================================== */
.navbar {
    background: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px;
    width: auto;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--color-gray-dark);
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
}

.nav-menu a:hover {
    color: var(--color-cyan);
}

.nav-menu .btn-register {
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
}

.nav-menu .btn-register:hover {
    background: linear-gradient(135deg, var(--color-teal), var(--color-cyan));
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 188, 212, 0.3);
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gray-dark);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: linear-gradient(135deg, #2d1b69 0%, #4a2080 40%, #764ba2 100%);
    padding: 180px 0 120px 0;
    position: relative;
    overflow: hidden;
}

/* Wave photo layer — shows the turquoise Caribbean wave clearly */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/hero-wave-2024.jpg');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.65;
    z-index: 1;
}

/* Subtle purple tint overlay — keeps wave visible but branded */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(45, 27, 105, 0.45) 0%,
        rgba(74, 32, 128, 0.30) 50%,
        rgba(0, 188, 212, 0.15) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--color-white);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    font-weight: 400;
}

.hero-date {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    border-radius: 50px;
    margin-bottom: 3rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.hero-date i {
    font-size: 1.3rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-orange), var(--color-red));
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(255, 87, 51, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 87, 51, 0.4);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-purple);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--color-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-gray-light);
}

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

.about-card {
    background: var(--color-white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.about-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-white);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-black);
}

.about-card p {
    color: var(--color-gray);
    line-height: 1.8;
}

/* ========================================
   Categories Section
   ======================================== */
.categories {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.category-card {
    background: var(--color-white);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: 2px solid var(--color-gray-light);
}

.category-card.featured {
    border: 2px solid var(--color-cyan);
    transform: scale(1.02);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

.category-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-badge.startup {
    background: linear-gradient(135deg, var(--color-orange), var(--color-red));
    color: var(--color-white);
}

.category-badge.growth {
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
}

.category-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-cyan);
    margin-bottom: 1rem;
    margin-top: 0.5rem;
}

.alumni-price {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: #28a745;
    background: rgba(40, 167, 69, 0.1);
    border-radius: 20px;
    padding: 2px 10px;
    margin-top: 4px;
}

/* O'STAD Alumni Discount Banner */
.ostad-discount-banner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: linear-gradient(135deg, #6B2C91 0%, #4a2080 100%);
    border: 2px solid rgba(255, 153, 51, 0.5);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 2.5rem;
    color: white;
    box-shadow: 0 8px 32px rgba(107, 44, 145, 0.3);
}

.ostad-discount-icon {
    font-size: 3rem;
    flex-shrink: 0;
    color: var(--color-orange);
}

.ostad-discount-text strong {
    font-size: 1.2rem;
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-orange);
}

.ostad-discount-text p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: rgba(255,255,255,0.9);
    margin: 0;
}

.ostad-discount-text a {
    color: var(--color-cyan);
    text-decoration: underline;
}

.discount-highlight {
    background: var(--color-orange);
    color: white;
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 800;
    font-size: 1.1rem;
}

.category-card.featured .category-price {
    color: var(--color-teal);
}

.category-card h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-black);
}

.category-description {
    color: var(--color-gray);
    margin-bottom: 2rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

.category-features {
    list-style: none;
}

.category-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--color-gray-dark);
    border-bottom: 1px solid var(--color-gray-light);
}

.category-features li:last-child {
    border-bottom: none;
}

.category-features i {
    color: var(--color-cyan);
    font-size: 1.2rem;
}

/* ========================================
   Schedule Section
   ======================================== */
.schedule {
    padding: var(--spacing-xl) 0;
    background: var(--color-gray-light);
}

.schedule-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:last-child::after {
    display: none;
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 39px;
    top: 80px;
    width: 2px;
    height: calc(100% + 30px);
    background: linear-gradient(180deg, var(--color-cyan), var(--color-purple));
}

.timeline-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 2rem;
    box-shadow: 0 5px 20px rgba(0, 188, 212, 0.3);
    z-index: 1;
}

.timeline-content {
    flex: 1;
    background: var(--color-white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.timeline-content h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--color-black);
}

.timeline-date {
    color: var(--color-cyan);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--color-gray);
    line-height: 1.7;
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    max-width: 1100px;
    margin: 0 auto;
}

.benefit-item {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    transition: var(--transition);
}

.benefit-item:hover {
    background: var(--color-gray-light);
    transform: translateY(-5px);
}

.benefit-item i {
    font-size: 3rem;
    color: var(--color-cyan);
    margin-bottom: 1rem;
}

.benefit-item h4 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--color-black);
}

.benefit-item p {
    color: var(--color-gray);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: 3rem 0;
    background: var(--color-gray-light);
}

.contact .section-header {
    margin-bottom: 2rem;
}

.contact .section-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.contact .section-header p {
    font-size: 1rem;
}

.contact-grid {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--color-white);
    padding: 1rem 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.contact-item i {
    font-size: 1.2rem;
    color: var(--color-cyan);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 188, 212, 0.1);
    border-radius: 50%;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 0.2rem;
    color: var(--color-black);
}

.contact-item p {
    color: var(--color-gray);
    font-size: 0.9rem;
    margin: 0;
}

.social-links {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.3rem;
}

.social-links a {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-cyan);
    color: var(--color-white);
    border-radius: 50%;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--color-teal);
    transform: translateY(-2px);
}

/* ========================================
   Partners Section
   ======================================== */
.partners {
    padding: var(--spacing-xl) 0;
    background-image: url('../images/pitch-stage.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
}

.partners::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.95) 0%, 
        rgba(0, 188, 212, 0.93) 35%,
        rgba(0, 150, 136, 0.95) 65%,
        rgba(107, 44, 145, 0.93) 100%
    );
    z-index: 1;
}

.partners .container {
    position: relative;
    z-index: 2;
}

.partners .section-header h2,
.partners .section-header p {
    color: var(--color-white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.partner-category {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

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

.partner-category h3 {
    font-size: 1.8rem;
    color: var(--color-white);
    margin-bottom: 3rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: relative;
    display: inline-block;
}

.partner-category h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-white);
    border-radius: 2px;
}

.organizers-grid {
    max-width: 500px;
    margin: 0 auto;
    justify-content: center;
}

.organizer-logo-direct {
    /* NO white box - logo directly on gradient background */
    background: transparent !important;
    padding: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    filter: none !important;
    opacity: 1 !important;
}

.organizer-logo-direct:hover {
    transform: scale(1.1);
    filter: none !important;
    box-shadow: none !important;
}

.organizer-logo-direct img {
    max-height: 150px !important;
    filter: none !important;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
    justify-items: center;
}

.partner-logo-direct {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    min-height: 140px;
    width: 100%;
    transition: var(--transition);
    filter: brightness(0) invert(1);
    opacity: 0.95;
}

.partner-logo-direct:hover {
    transform: scale(1.1);
    opacity: 1;
    filter: brightness(0) invert(1) drop-shadow(0 5px 15px rgba(255, 255, 255, 0.3));
}

.partner-logo-direct img {
    max-width: 100%;
    max-height: 120px;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* Special adjustment for OCBN logo */
.ocbn-logo {
    max-height: 80px !important;
    filter: none !important;
    opacity: 1 !important;
}

/* Impact Hub white logo - already white, no filter needed */
.organizer-logo-direct {
    filter: none !important;
    opacity: 1 !important;
}

.partner-logo-direct.placeholder {
    border: 2px dashed rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    min-height: 140px;
    filter: none;
    opacity: 0.7;
    background: rgba(255, 255, 255, 0.05);
}

.partner-logo-direct.placeholder:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.8);
    opacity: 1;
    filter: none;
}

.partner-logo-direct.placeholder span {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.partner-text-logo {
    color: var(--color-white);
    font-size: 1.8rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Chatbot
   ======================================== */
.chatbot-toggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
    border: none;
    box-shadow: 0 5px 20px rgba(0, 188, 212, 0.4);
    cursor: pointer;
    font-size: 1.5rem;
    transition: var(--transition);
    z-index: 999;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(0, 188, 212, 0.5);
}

.chatbot-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--color-red);
    color: var(--color-white);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.chatbot-container {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 380px;
    max-height: 600px;
    background: var(--color-white);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    z-index: 1000;
    overflow: hidden;
}

.chatbot-container.active {
    display: flex;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.chatbot-header {
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chatbot-avatar {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chatbot-header h4 {
    margin: 0;
    font-size: 1.1rem;
}

.chatbot-status {
    font-size: 0.85rem;
    opacity: 0.9;
    margin: 0;
}

.chatbot-close {
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: var(--transition);
}

.chatbot-close:hover {
    transform: rotate(90deg);
}

.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    max-height: 350px;
    background: var(--color-gray-light);
}

.chatbot-message {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease;
}

.chatbot-message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.2rem;
}

.chatbot-message.bot .message-avatar {
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
}

.chatbot-message.user .message-avatar {
    background: var(--color-purple);
    color: var(--color-white);
}

.message-content {
    flex: 1;
    background: var(--color-white);
    padding: 1rem;
    border-radius: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.chatbot-message.user .message-content {
    background: var(--color-cyan);
    color: var(--color-white);
}

.message-content p {
    margin: 0;
    line-height: 1.5;
}

.chatbot-quick-questions {
    padding: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    border-top: 1px solid var(--color-gray-light);
    background: var(--color-white);
}

.quick-question {
    padding: 0.5rem 1rem;
    background: var(--color-gray-light);
    border: none;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-primary);
}

.quick-question:hover {
    background: var(--color-cyan);
    color: var(--color-white);
    transform: translateY(-2px);
}

.chatbot-input {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid var(--color-gray-light);
    background: var(--color-white);
}

.chatbot-input input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-gray-light);
    border-radius: 25px;
    font-size: 0.95rem;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.chatbot-input input:focus {
    outline: none;
    border-color: var(--color-cyan);
}

.chatbot-input button {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-teal));
    color: var(--color-white);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}

.chatbot-input button:hover {
    transform: scale(1.1);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo img {
    height: 50px;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}

.footer-logo p {
    color: var(--color-gray);
    margin-top: 0.5rem;
}

.footer-links h4,
.footer-info h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--color-gray);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-cyan);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-gray);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--color-white);
        padding: 2rem;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-date {
        font-size: 0.9rem;
        padding: 0.75rem 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .timeline-item::after {
        display: none;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 40px;
    }
    
    .hero {
        padding: 140px 0 80px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .chatbot-container {
        width: calc(100vw - 20px);
        right: 10px;
        left: 10px;
        bottom: 90px;
    }
    
    .chatbot-toggle {
        right: 20px;
        bottom: 20px;
    }
}