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

:root {
    /* Colors from the image */
    --purple-dark: #6B46C1;
    --purple-bright: #8B5CF6;
    --purple-light: #A78BFA;
    --blue: #3B82F6;
    --blue-light: #60A5FA;
    --gray: #6B7280;
    --gray-light: #9CA3AF;
    --white: #FFFFFF;
    --black: #000000;
    --background: #FFFFFF;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transitions */
    --transition: 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--black);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Navigation Bar */
.navbar {
    background: var(--purple-dark);
    padding: var(--spacing-sm) 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    height: 64px;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-square {
    width: 40px;
    height: 40px;
    background: var(--white);
    color: var(--purple-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: opacity var(--transition);
    padding: var(--spacing-xs) var(--spacing-sm);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    transition: opacity var(--transition);
}

.user-icon:hover {
    opacity: 0.8;
}

.demo-btn {
    background: var(--purple-bright);
    color: var(--white);
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background var(--transition);
}

.demo-btn:hover {
    background: var(--purple-light);
}

/* Hero Section */
.hero-section {
    padding: var(--spacing-2xl) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
    margin-top: 64px; /* Account for fixed navbar */
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Hide hero section when chat is active */
body.chat-active .hero-section,
body.chatkit-widget-active .hero-section {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    min-height: 70vh;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.title-line {
    display: block;
}

.title-line.highlight {
    color: var(--purple-bright);
}

/* Interactive Section */
.interactive-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.play-icon {
    width: 32px;
    height: 32px;
    color: var(--purple-bright);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--transition);
}

.play-icon:hover {
    transform: scale(1.1);
}

.interactive-text {
    font-size: 1.25rem;
    color: var(--black);
    font-weight: 500;
}

.select-wrapper {
    position: relative;
    display: inline-block;
}

.partnership-select {
    appearance: none;
    background: var(--white);
    border: 2px solid var(--purple-light);
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 2.5rem;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--black);
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition);
    min-width: 280px;
    outline: none;
}

.partnership-select:hover {
    border-color: var(--purple-bright);
}

.partnership-select:focus {
    border-color: var(--purple-bright);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.select-wrapper::after {
    content: '';
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--purple-bright);
    pointer-events: none;
}

.chat-icon-btn {
    width: 48px;
    height: 48px;
    background: var(--purple-bright);
    color: var(--white);
    border: none;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.chat-icon-btn:hover {
    background: var(--purple-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.4);
}

.chat-icon-btn:active {
    transform: translateY(0);
}

/* Hero Illustration */
.hero-illustration {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.illustration-placeholder {
    width: 100%;
    height: 500px;
    position: relative;
    background: linear-gradient(135deg, #E0E7FF 0%, #C7D2FE 100%);
    border-radius: 20px;
    overflow: hidden;
}

.geo-shape {
    position: absolute;
    border-radius: 12px;
    opacity: 0.8;
}

.shape-1 {
    width: 200px;
    height: 200px;
    background: var(--blue);
    top: 20%;
    left: 10%;
    transform: rotate(15deg);
}

.shape-2 {
    width: 150px;
    height: 150px;
    background: var(--blue-light);
    top: 50%;
    right: 20%;
    transform: rotate(-20deg);
}

.shape-3 {
    width: 180px;
    height: 180px;
    background: var(--gray-light);
    bottom: 15%;
    left: 30%;
    transform: rotate(10deg);
}

/* Chat Screen - Expands to fill screen while preserving navbar */
.chat-screen {
    position: fixed;
    top: 64px; /* Height of navbar */
    left: 0;
    width: 100%;
    height: calc(100% - 64px); /* Full height minus navbar */
    background: var(--background);
    z-index: 1500;
    display: flex;
    align-items: stretch;
    justify-content: center;
    opacity: 0;
    transform: scale(0.95) translateY(20px);
    transform-origin: center center;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.chat-screen.active {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
}

.chat-screen.hidden {
    /* Use visibility and opacity instead of display: none
       to allow ChatKit to initialize in background */
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    /* Keep it off-screen but still in DOM */
    transform: scale(0.01) translateY(100vh);
}

.chat-container {
    position: relative;
    width: 100%;
    height: 100%;
    /* max-width: 1400px;
    margin: 0 auto; */
    display: flex;
    flex-direction: column;
    background: var(--white);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    animation: expandIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.close-button-overlay {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--gray-light);
    border-radius: 8px;
    color: var(--gray);
    cursor: pointer;
    transition: all var(--transition);
}

.close-button-overlay:hover {
    background: var(--white);
    color: var(--black);
    transform: scale(1.1);
}

.chatkit-container {
    width: 100%;
    height: 100%;
    flex: 1;
    overflow: hidden;
}

.chatkit-container openai-chatkit {
    display: block;
    width: 100%;
    height: 100%;
}

/* Animations */
@keyframes expandIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes growIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .nav-links {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .interactive-section {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .partnership-select {
        min-width: 100%;
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
}