/* Global Variables & Design System */
:root {
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --primary-light: #EFF6FF;
    --bg-dark: #0F172A;
    --bg-light: #F8FAFC;
    --card-bg: #FFFFFF;
    --text-main: #1E293B;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    --gradient-brand: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 24px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    color: var(--bg-dark);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s ease;
}

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

.nav-btn {
    text-decoration: none;
    background-color: var(--primary);
    color: #FFFFFF;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.2);
}

.nav-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(59, 130, 246, 0.3);
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: 100px;
    background: var(--gradient-hero);
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0) 70%);
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 48px;
    line-height: 1.25;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 18px;
    color: #94A3B8;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.08);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}

.hero-img {
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: all 0.5s ease;
}

.hero-image-wrapper:hover .hero-img {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
    box-shadow: 0 30px 60px -10px rgba(0, 0, 0, 0.6);
}

.image-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    box-shadow: inset 0 0 40px rgba(59, 130, 246, 0.2);
    pointer-events: none;
}

/* Features Section */
.features {
    padding: 120px 0;
    background-color: #FFFFFF;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 72px auto;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    color: var(--bg-dark);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-muted);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 40px 32px;
    background-color: var(--bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(59, 130, 246, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 24px;
}

.bg-blue { background-color: #EFF6FF; }
.bg-purple { background-color: #F5F3FF; }
.bg-indigo { background-color: #EEF2FF; }
.bg-teal { background-color: #F0FDFA; }

.feature-card .feature-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--bg-dark);
    margin-bottom: 14px;
}

.feature-desc {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 120px 0;
    background-color: var(--bg-light);
}

.about-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-desc {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 36px;
    line-height: 1.8;
}

.company-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.info-item {
    display: flex;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.info-label {
    font-weight: 600;
    color: var(--bg-dark);
    width: 90px;
}

.info-value {
    color: var(--text-muted);
}

.about-visual {
    position: relative;
    width: 100%;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-circle {
    position: absolute;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: var(--gradient-brand);
    filter: blur(40px);
    opacity: 0.6;
    animation: pulse 8s infinite alternate;
}

.visual-glass {
    position: relative;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 360px;
    z-index: 2;
}

.visual-glass h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--bg-dark);
}

.visual-glass p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Download Section */
.download {
    padding: 100px 0 140px 0;
    background-color: #FFFFFF;
}

.download-card {
    background: var(--gradient-hero);
    border-radius: 24px;
    padding: 60px 40px;
    text-align: center;
    color: #FFFFFF;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, rgba(139, 92, 246, 0) 70%);
    pointer-events: none;
}

.download-title {
    font-size: 32px;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    margin-bottom: 16px;
}

.download-desc {
    font-size: 18px;
    color: #94A3B8;
    margin-bottom: 40px;
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
}

.download-btn.primary {
    background-color: var(--primary);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.download-btn.primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.download-btn.secondary {
    background-color: rgba(255, 255, 255, 0.08);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.download-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.download-tip {
    font-size: 13px;
    color: #64748B;
}

/* Footer */
.footer {
    padding: 40px 0;
    background-color: var(--bg-dark);
    color: #64748B;
    border-top: 1px solid #1E293B;
    text-align: center;
    font-size: 14px;
}

.footer a {
    color: #94A3B8;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Keyframes & Animations */
@keyframes pulse {
    0% { transform: scale(1) translate(0, 0); opacity: 0.5; }
    50% { transform: scale(1.1) translate(10px, -10px); opacity: 0.7; }
    100% { transform: scale(1) translate(0, 0); opacity: 0.5; }
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

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

    .hero-img {
        transform: none;
        max-width: 600px;
    }

    .hero-image-wrapper:hover .hero-img {
        transform: none;
    }

    .about-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-visual {
        height: auto;
    }

    .visual-glass {
        max-width: 100%;
    }
}

@media (max-width: 576px) {
    .header {
        height: 70px;
    }

    .nav {
        display: none; /* simple mobile hide for clean look */
    }

    .hero {
        padding-top: 120px;
        padding-bottom: 60px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .section-title {
        font-size: 28px;
    }

    .download-card {
        padding: 40px 20px;
    }

    .download-btn {
        width: 100%;
        justify-content: center;
    }
}