/* 
 * style.css - Light Theme (Matching Icon Design)
 * The icon has a light/off-white background with dark line-art,
 * so this theme uses a similar aesthetic for cohesion.
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #555555;
    --background-color: #f5f5f3;
    --text-color: #1a1a1a;
    --text-secondary: #666666;
    --card-bg: rgba(0, 0, 0, 0.03);
    --border-color: rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Pretendard", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
header {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(245, 245, 243, 0.9);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Language Switch */
.lang-switch a {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.lang-switch a:hover {
    color: var(--text-color);
    border-color: var(--text-color);
    background: rgba(0, 0, 0, 0.03);
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 60px 0;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
    color: var(--text-color);
    line-height: 1.2;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 40px;
}

/* Store Badge */
.store-badge {
    display: inline-block;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.store-badge:hover {
    transform: translateY(-3px) scale(1.05);
    filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.15));
}

.store-badge img {
    height: 80px;
    width: auto;
}

/* Download Button (legacy) */
.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--text-color);
    color: var(--background-color);
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    background-color: #333333;
}

/* Release Notice */
.release-notice {
    margin-top: 20px;
    padding: 20px 30px;
    background: rgba(0, 0, 0, 0.03);
    border-radius: 15px;
    display: inline-block;
    border: 1px solid var(--border-color);
}

.release-badge {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    display: block;
    margin-bottom: 8px;
}

.release-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0 !important;
}

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--text-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 20px;
    display: inline-block;
    padding: 15px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 15px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-secondary);
}

/* Footer */
footer {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 50px;
    text-align: center;
    color: var(--text-secondary);
}

/* Gallery Section */
.gallery {
    padding: 100px 0;
    background: linear-gradient(to bottom, var(--background-color), #eaeae8);
}

.gallery h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--text-color);
}

.gallery-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    padding: 0 20px;
}

.screenshot-container {
    width: 280px;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 8px solid #e0e0de;
    transition: transform 0.3s;
}

.screenshot-container:hover {
    transform: translateY(-10px);
}

.screenshot-container img {
    width: 100%;
    height: auto;
    display: block;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 15px;
    transition: color 0.2s;
}

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

/* Trademark Notice */
.trademark-notice {
    margin-top: 12px;
    font-size: 0.75rem;
    color: #999;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 2.2rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

.cta-section p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .screenshot-container {
        width: 220px;
    }

    .gallery-grid {
        gap: 15px;
    }

    .store-badge img {
        height: 60px;
    }

    .cta-section h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.05rem;
    }

    .screenshot-container {
        width: 180px;
        border-radius: 20px;
        border-width: 5px;
    }
}