/* Import modern web font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Reset and Modern Foundation */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Design Tokens - CSS Custom Properties */
:root {
    /* Colors */
    --primary-yellow: #fceb92;
    --accent-yellow: #f4d03f;
    --gradient-yellow: linear-gradient(135deg, #fceb92 0%, #f4d03f 100%);
    --dark-text: #2c3e50;
    --light-text: #7f8c8d;
    --white: #ffffff;
    --shadow-light: rgba(0, 0, 0, 0.08);
    --shadow-medium: rgba(0, 0, 0, 0.12);
    --shadow-strong: rgba(0, 0, 0, 0.16);

    /* Typography */
    --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-xl: clamp(2.5rem, 5vw, 4rem);
    --font-size-lg: clamp(1.5rem, 3vw, 2rem);
    --font-size-md: 1.125rem;
    --font-size-sm: 1rem;
    --font-size-xs: 0.875rem;

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Borders */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Modern CSS Reset */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    color: var(--dark-text);
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    height: 100vh;
    background-color: var(--white);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.header {
    background: var(--gradient-yellow);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    pointer-events: none;
}

.logo {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.logo-icon {
    height: 60px;
    margin-right: var(--space-sm);
    filter: drop-shadow(0 2px 4px var(--shadow-light));
    transition: transform var(--transition-normal);
}

.logo-icon:hover {
    transform: scale(1.05);
}

.logo-text h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-text);
    letter-spacing: 0.5px;
}

.logo-text p {
    margin: 0;
    font-size: var(--font-size-xs);
    color: var(--light-text);
    letter-spacing: 0.25px;
    font-weight: 400;
}

.main-content {
    text-align: center;
    padding: 1.25rem 1rem;
    background: var(--gradient-yellow);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.main-content>* {
    position: relative;
    z-index: 1;
}

.app-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--dark-text);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    font-weight: 700;
    line-height: var(--line-height-tight);
    text-transform: uppercase;
}

.app-title:nth-of-type(2) {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 500;
    color: var(--light-text);
    margin-bottom: 0.75rem;
    text-transform: none;
    position: relative;
}

.app-title:nth-of-type(2)::before {
    content: '✨';
    margin-right: var(--space-xs);
}

.app-title:nth-of-type(2)::after {
    content: '✨';
    margin-left: var(--space-xs);
}

.app-description {
    font-size: var(--font-size-md);
    color: var(--light-text);
    margin-bottom: 0;
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.request-demo-btn,
.cta-button {
    background: linear-gradient(135deg, var(--dark-text) 0%, #34495e 100%);
    color: var(--white);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-md);
    font-weight: 600;
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 16px var(--shadow-medium);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.request-demo-btn::before,
.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.request-demo-btn:hover,
.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px var(--shadow-strong);
}

.request-demo-btn:hover::before,
.cta-button:hover::before {
    left: 100%;
}

.request-demo-btn:active,
.cta-button:active {
    transform: translateY(0);
    box-shadow: 0 4px 8px var(--shadow-medium);
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding: 2rem 1.5rem;
    background-color: var(--white);
    flex: 1;
    align-content: center;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem 1rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px var(--shadow-light);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-height: 120px;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-yellow);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--shadow-medium);
}

.feature-item:hover::before {
    transform: scaleX(1);
}

.feature-item .icon {
    font-size: 3rem;
    color: var(--dark-text);
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}

.feature-item:hover .icon {
    color: var(--accent-yellow);
    transform: scale(1.1);
}

.feature-item p {
    font-size: var(--font-size-md);
    color: var(--dark-text);
    font-weight: 600;
    margin: 0;
    line-height: var(--line-height-normal);
}

/* Accessibility - Respect user preferences */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Responsive Design - Maintain single page layout */
@media (max-width: 768px) {
    .header {
        padding: 0.5rem 1rem;
    }

    .logo-icon {
        height: 50px;
    }

    .main-content {
        padding: 1rem;
    }

    .features {
        grid-template-columns: repeat(2, 1fr);
        padding: 1.5rem 1rem;
        gap: 1rem;
    }

    .feature-item {
        padding: 1.25rem 0.75rem;
        min-height: 110px;
    }

    .feature-item .icon {
        font-size: 2.5rem;
        margin-bottom: 0.75rem;
    }

    .feature-item p {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.5rem;
    }

    .logo-icon {
        height: 45px;
        margin-right: var(--space-xs);
    }

    .main-content {
        padding: 0.75rem;
    }

    .app-description {
        font-size: var(--font-size-sm);
        margin-bottom: 0;
    }

    .features {
        grid-template-columns: repeat(3, 1fr);
        padding: 1.25rem 0.75rem;
        gap: 0.75rem;
    }

    .feature-item {
        padding: 1rem 0.5rem;
        min-height: 100px;
    }

    .feature-item .icon {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .feature-item p {
        font-size: 0.8rem;
        line-height: 1.2;
    }
}

/* Ensure no scrolling on any screen size */
@media (max-height: 600px) {
    .header {
        padding: 0.5rem 1rem;
    }

    .logo-icon {
        height: 40px;
    }

    .main-content {
        padding: 1rem;
    }

    .app-title {
        margin-bottom: 0.5rem;
    }

    .app-title:nth-of-type(2) {
        margin-bottom: 0.5rem;
    }

    .features {
        padding: 0.75rem;
        gap: 0.5rem;
    }

    .feature-item {
        padding: 0.5rem;
    }

    .feature-item .icon {
        font-size: 1.5rem;
        margin-bottom: 0.25rem;
    }

    .feature-item p {
        font-size: 0.7rem;
    }
}