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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1E293B;
    background-color: #F8FAFC;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 12px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #7C3AED, #A855F7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: #64748B;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #7C3AED;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #7C3AED, #A855F7);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: #1E293B;
}

.gradient-text {
    background: linear-gradient(135deg, #7C3AED, #A855F7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: #64748B;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #7C3AED, #A855F7);
    color: white;
    box-shadow: 0 10px 25px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(124, 58, 237, 0.4);
}

.btn-secondary {
    background: white;
    color: #7C3AED;
    border: 2px solid #E2E8F0;
}

.btn-secondary:hover {
    background: #F8FAFC;
    border-color: #7C3AED;
    transform: translateY(-2px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Penguin Hero Section */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.penguin-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.penguin-mascot {
    width: 300px;
    height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
    animation: float 6s ease-in-out infinite;
}


@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}


/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1E293B;
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.25rem;
    color: #64748B;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 32px;
    border-radius: 24px;
    border: 1px solid #E2E8F0;
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #7C3AED;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #F8FAFC, #F1F5F9);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 16px;
}

.feature-card p {
    color: #64748B;
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 60px;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: center;
    gap: 40px;
    background: white;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.step:hover {
    transform: translateX(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.step:nth-child(even) {
    flex-direction: row-reverse;
}

.step:nth-child(even):hover {
    transform: translateX(-10px);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #7C3AED, #A855F7);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 12px;
}

.step-content p {
    color: #64748B;
    line-height: 1.6;
}

.step-icon {
    width: 100px;
    height: 100px;
    flex-shrink: 0;
}

.step-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Download Section */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #7C3AED, #A855F7);
    color: white;
    position: relative;
    overflow: hidden;
}

.download::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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.download-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.download-text p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.7;
}

.download-buttons {
    margin-bottom: 24px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 20px 32px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.download-icon {
    width: 24px;
    height: 24px;
}

.download-text-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.download-store {
    font-size: 1.2rem;
    font-weight: 600;
}

.download-note {
    font-size: 0.9rem;
    opacity: 0.7;
}

.download-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-preview {
    width: 250px;
    height: 250px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
    animation: float 6s ease-in-out infinite;
}


/* Footer */
.footer {
    background: #1E293B;
    color: white;
    padding: 60px 0 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 12px;
}

.footer-logo-text {
    font-size: 24px;
    font-weight: 700;
    color: white;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: #94A3B8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    color: #94A3B8;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .penguin-mascot {
        width: 200px;
        height: 200px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        flex-direction: column !important;
        text-align: center;
        gap: 24px;
    }
    
    .step:hover {
        transform: translateY(-5px) !important;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-description,
    .section-description {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 1rem;
    }
    
    .features,
    .how-it-works,
    .download,
    .contact {
        padding: 60px 0;
    }
    
    .feature-card {
        padding: 32px 24px;
    }
    
    .step {
        padding: 32px 24px;
    }
    
    .penguin-mascot,
    .app-preview,
    .contact-penguin img {
        width: 150px;
        height: 150px;
    }
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Image loading and optimization */
img {
    transition: opacity 0.3s ease;
}

/* Specific image sizing - exclude buttons and icons */
img:not(.btn-icon):not(.download-icon) {
    max-width: 100%;
    height: auto;
    display: block;
}

/* App Store badge styling */
.btn-icon, .download-icon {
    height: 40px;
    width: auto;
    display: inline-block;
}

img[src] {
    opacity: 1;
}

/* Image loading states */
img:not([src]) {
    opacity: 0;
}

/* Specific image optimizations */
.logo, .footer-logo-img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.penguin-mascot, .app-preview {
    image-rendering: auto;
    will-change: transform;
}

.feature-icon img, .step-icon img {
    image-rendering: auto;
    object-fit: contain;
}

/* Larger mascots for specific features */
.feature-card:nth-child(1) .feature-icon img, /* Smart Search */
.feature-card:nth-child(2) .feature-icon img { /* Global Reach */
    width: 80px;
    height: 80px;
}

.feature-card:nth-child(5) .feature-icon img { /* Application Timeline */
    width: 70px;
    height: 70px;
}

/* Loading placeholder */
.img-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Focus styles for accessibility */
.btn:focus,
.download-btn:focus,
.nav-links a:focus {
    outline: 2px solid #7C3AED;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #7C3AED;
        border: 2px solid #000;
    }
    
    .btn-secondary {
        background: #fff;
        border: 2px solid #000;
        color: #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .penguin-mascot,
    .app-preview {
        animation: none;
    }
}