/* BTS Website - Purple Color Scheme */
/* Color Palette based on BTS "Borahae" purple */

:root {
    /* Primary Purple Shades */
    --purple-dark: #4a0080;
    --purple-primary: #6b2d8c;
    --purple-medium: #8b4fc4;
    --purple-light: #b388d4;
    --purple-pale: #e6d5f2;
    --purple-glow: #c77dff;
    
    /* Complementary Colors */
    --white: #ffffff;
    --off-white: #f8f5fc;
    --dark: #1a1a2e;
    --dark-purple: #16162a;
    --gray: #666666;
    
    /* Gradients */
    --gradient-purple: linear-gradient(135deg, var(--purple-dark) 0%, var(--purple-primary) 50%, var(--purple-medium) 100%);
    --gradient-hero: linear-gradient(180deg, var(--dark-purple) 0%, var(--purple-dark) 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--off-white);
    color: var(--dark);
    line-height: 1.6;
    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(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    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;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-purple {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--purple-glow);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--purple-light);
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 20px;
}

.purple-hearts {
    margin-bottom: 20px;
}

.heart {
    font-size: 2rem;
    margin: 0 10px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

.heart:nth-child(2) {
    animation-delay: 0.5s;
}

.heart:nth-child(3) {
    animation-delay: 1s;
}

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

.hero-title {
    color: var(--white);
    margin-bottom: 20px;
}

.title-line {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    text-shadow: 0 0 30px var(--purple-glow);
    letter-spacing: 3px;
}

.title-subtitle {
    display: block;
    font-size: 2rem;
    font-weight: 300;
    color: var(--purple-light);
    margin-top: 10px;
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--purple-glow);
    margin-bottom: 15px;
    font-style: italic;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--purple-pale);
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--gradient-purple);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(199, 125, 255, 0.4);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(199, 125, 255, 0.6);
}

/* Hero Background Decoration */
.hero-bg-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.purple-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--purple-medium);
    top: -100px;
    right: -100px;
    animation: orbit 15s linear infinite;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--purple-glow);
    bottom: -50px;
    left: -50px;
    animation: orbit 20s linear infinite reverse;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: var(--purple-light);
    top: 50%;
    left: 50%;
    animation: orbit 10s linear infinite;
}

@keyframes orbit {
    0% { transform: rotate(0deg) translateX(30px) rotate(0deg); }
    100% { transform: rotate(360deg) translateX(30px) rotate(-360deg); }
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    color: var(--purple-dark);
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '💜';
    display: block;
    font-size: 1.5rem;
    margin-top: 10px;
}

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

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 20px;
    text-align: center;
}

.borahae {
    font-size: 1.3rem !important;
    color: var(--purple-primary) !important;
    font-weight: 600;
    margin-top: 30px !important;
}

/* Members Section */
.members {
    background: var(--gradient-hero);
}

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

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    padding: 0 20px;
}

.member-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(199, 125, 255, 0.2);
}

.member-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 40px rgba(199, 125, 255, 0.3);
}

.member-avatar {
    font-size: 3rem;
    margin-bottom: 15px;
}

.member-card h3 {
    color: var(--purple-glow);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.member-role {
    color: var(--purple-light);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.member-name {
    color: var(--white);
    font-size: 0.95rem;
    opacity: 0.8;
}

/* Music Section */
.music {
    background: var(--off-white);
}

.music-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 0 20px;
}

.album-card {
    background: var(--white);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(107, 45, 140, 0.1);
    transition: all 0.3s ease;
}

.album-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(107, 45, 140, 0.2);
}

.album-cover {
    font-size: 4rem;
    margin-bottom: 15px;
}

.album-card h3 {
    color: var(--purple-dark);
    margin-bottom: 5px;
}

.album-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

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

.contact-text {
    color: var(--gray);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.social-link {
    padding: 12px 25px;
    background: var(--gradient-purple);
    color: var(--white);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(199, 125, 255, 0.4);
}

/* Footer */
.footer {
    background: var(--dark-purple);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    color: var(--white);
}

.footer-logo {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.footer-tagline {
    color: var(--purple-light);
    font-style: italic;
    margin-bottom: 15px;
}

.footer-copyright {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(26, 26, 46, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .title-line {
        font-size: 2.2rem;
    }
    
    .title-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-tagline {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .members-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .member-card {
        padding: 20px 15px;
    }
    
    .member-avatar {
        font-size: 2.5rem;
    }
    
    .member-card h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .title-line {
        font-size: 1.8rem;
    }
    
    .title-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
    }
    
    .cta-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
    }
    
    .social-link {
        width: 80%;
        text-align: center;
    }
}