/* ===== CSS Variables ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #f59e0b;
    --accent: #ec4899;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-ocean: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-sunset: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius: 20px;
    --radius-sm: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    background: var(--gradient);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255,255,255,0.1) 0%, transparent 30%);
    animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 40px;
}

.hero-avatar {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    margin: 0 auto 30px;
    padding: 6px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--white);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.hero h1 .highlight {
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
    font-weight: 300;
}

.hero-tags {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.tag {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    color: var(--white);
    font-size: 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid rgba(255, 255, 255, 0.7);
    border-bottom: 2px solid rgba(255, 255, 255, 0.7);
    transform: rotate(45deg);
    margin: 8px auto 0;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== Section Styles ===== */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    position: relative;
    color: var(--dark);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===== About Section ===== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.about-card {
    background: var(--light);
    padding: 40px 30px;
    border-radius: var(--radius);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0,0,0,0.05);
    opacity: 0;
    transform: translateY(30px);
}

.about-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.about-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--primary);
}

.about-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ===== Gallery Section ===== */
.gallery {
    background: var(--gradient);
    padding: 100px 0;
}

.gallery .section-title {
    color: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.gallery-item {
    aspect-ratio: 1;
    border-radius: var(--radius);
    overflow: hidden;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.5s ease;
}

.gallery-item.visible {
    opacity: 1;
    transform: scale(1);
}

.gallery-item:nth-child(1) { transition-delay: 0.1s; }
.gallery-item:nth-child(2) { transition-delay: 0.2s; }
.gallery-item:nth-child(3) { transition-delay: 0.3s; }
.gallery-item:nth-child(4) { transition-delay: 0.4s; }

.gallery-item:hover {
    transform: scale(1.05);
    z-index: 10;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* ===== Brother Section ===== */
.brother {
    background: linear-gradient(135deg, #e0e5ec 0%, #f5f7fa 100%);
}

.brother-content {
    display: flex;
    align-items: center;
    gap: 50px;
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 50px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.brother-avatar {
    flex-shrink: 0;
}

.brother-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--white);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.avatar-placeholder-bro {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e0e5ec 0%, #c4c9d4 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--gray);
    font-weight: 700;
    border: 4px solid var(--white);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.brother-info h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.brother-desc {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
    font-style: italic;
}

.brother-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.brother-tags .tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-color: rgba(99, 102, 241, 0.3);
}

/* ===== Owner Section ===== */
.owner {
    background: var(--light);
}

.owners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.owner-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.owner-avatar {
    margin-bottom: 20px;
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
    font-weight: 700;
    margin: 0 auto;
}

.owner-info h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.owner-info p {
    color: var(--gray);
    line-height: 1.7;
}

.owner-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 20px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--dark);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

/* ===== Contact Section ===== */
.contact {
    background: var(--white);
    text-align: center;
}

.contact-desc {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 40px;
}

.contact-card {
    display: inline-block;
    background: var(--gradient);
    padding: 30px 50px;
    border-radius: var(--radius);
    color: var(--white);
    font-size: 1.2rem;
    box-shadow: var(--shadow);
}

/* ===== IP Section ===== */
.ip-section {
    background: var(--dark);
    color: var(--white);
    text-align: center;
    padding: 60px 0;
}

.ip-section h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

#ip-address {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    margin: 20px 0;
    background: var(--gradient-ocean);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ip-note {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Language Switch Button */
.lang-switch {
    margin-top: 30px;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    color: var(--white);
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.lang-icon {
    font-size: 1.1rem;
}

.lang-text {
    font-weight: 500;
}

/* ===== Footer ===== */
footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer p {
    margin-bottom: 8px;
}

.footer-made {
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.footer-made .journey {
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.footer-made .openclaw {
    background: var(--gradient-ocean);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.copyright {
    font-size: 0.85rem;
    opacity: 0.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-avatar {
        width: 140px;
        height: 140px;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .owner-content {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }
    
    .owners-grid {
        grid-template-columns: 1fr;
    }
    
    .brother-content {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }
    
    .owner-links {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-tags {
        flex-direction: column;
        align-items: center;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item {
        aspect-ratio: 4/3;
    }
}