:root {
    --primary-teal: #24C2B6;
    --secondary-pink: #FF6FAF;
    --accent-orange: #FFB73A;
    --accent-purple: #7B4DFF;
    --light-bg: #FEF7FF;
    --white: #ffffff;
    --text-dark: #222222;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
}

/* Navigation */

header {
    background: var(--white);
    box-shadow: 0 2px 20px rgba(0,0,0,0.12);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding-bottom: 16px;
}

.header-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 110px;
    padding: 18px 0 8px;
    gap: 12px;
}

.logo-hang {
    position: absolute;
    left: 50%;
    top: 80px;
    transform: translateX(-50%);
    z-index: 1100;
    background: transparent;
    width: 180px;
    height: 110px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    pointer-events: none;
}
.logo-hang img {
    width: 180px;
    height: auto;
    filter: drop-shadow(0 6px 18px rgba(0,0,0,0.10));
    background: transparent;
}

.header-bar nav {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
}

.header-bar .nav-links {
    display: flex;
    list-style: none;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.header-bar .nav-links a {
    text-decoration: none;
    color: var(--secondary-pink);
    font-weight: 600;
    font-size: 1.1rem;
    padding: 10px 14px;
    border-radius: 12px;
    transition: background 0.2s, color 0.2s, transform 0.2s;
    border: 2px solid transparent;
}
.header-bar .nav-links a:hover {
    background: rgba(7, 163, 111, 0.412);
    color: var(--accent-purple);
    border-color: rgba(255, 111, 175, 0.28);
    transform: translateY(-1px);
}

.top-bar {
    background: linear-gradient(90deg, rgba(255,111,175,0.95), var(--primary-teal));
    color: white;
    text-align: center;
    padding: 8px 10%;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10%;
}

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

.nav-links li {
    margin-left: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary-teal);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-orange);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.358), rgba(0, 0, 0, 0.682)), url('assets/gallery/balloons/Birthday_Blue.jpg') no-repeat;
    background-size: cover;
    background-position: center;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: 80px 10%;
}

.hero-content {
    max-width: 760px;
    backdrop-filter: blur(1px);
}

.hero-content h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    margin-bottom: 18px;
    line-height: 1.05;
}

.hero-copy {
    font-size: 1.05rem;
    max-width: 620px;
    margin: 0 auto 30px;
    color: rgba(255,255,255,0.94);
}

.gallery-section {
    padding: 80px 10%;
    background: var(--light-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 45px;
}

.section-subtitle {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent-purple);
    font-size: 0.85rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.section-header h2 {
    font-size: 2.8rem;
    color: var(--secondary-pink);
    margin: 0;
}

/* Main Content */
section {
    padding: 80px 10%;
}


/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.gallery-card {
    background: var(--light-bg);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    cursor: pointer;
}

.gallery-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.gallery-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.gallery-info {
    padding: 20px;
}

.gallery-info h3 {
    color: var(--secondary-pink);
    margin-bottom: 10px;
}

/* Footer */
footer {
    background: var(--primary-orange);
    color: #999;
    padding: 50px 10% 20px;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-content h1 { font-size: 2.2rem; }
}