/* CSS Variables for White/Yellow/Green Theme */
:root {
    --primary-white: #ffffff;
    --off-white: #f8fcf8;
    --accent-yellow: #ffde59; /* Bright Yellow */
    --accent-green: #7ed957; /* Fresh Green */
    --text-dark: #333333;
    --text-gray: #666666;
    --shadow-color: rgba(126, 217, 87, 0.15);
    --border-radius: 16px;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Header (Glassmorphism) */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(126, 217, 87, 0.2);
    transition: all var(--transition-speed) ease;
}

header.scrolled {
    box-shadow: 0 4px 20px var(--shadow-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.logo span {
    color: var(--accent-green);
}

.nav-menu ul {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    transition: color var(--transition-speed) ease;
}

.nav-link:hover {
    color: var(--accent-green);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -6px;
    left: 0;
    background-color: var(--accent-yellow);
    transition: width var(--transition-speed) ease;
    border-radius: 2px;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--off-white) 0%, var(--primary-white) 100%);
    overflow: hidden;
    padding-top: 70px; /* Offset for header */
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-title .highlight {
    color: var(--accent-green);
    position: relative;
    display: inline-block;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 30%;
    bottom: 5px;
    left: 0;
    background-color: var(--accent-yellow);
    z-index: -1;
    opacity: 0.6;
    border-radius: 4px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    background-color: var(--accent-yellow);
    border-radius: 30px;
    box-shadow: 0 4px 15px rgba(255, 222, 89, 0.4);
    transition: all var(--transition-speed) ease;
}

.cta-button:hover {
    background-color: var(--accent-green);
    color: var(--primary-white);
    box-shadow: 0 6px 20px rgba(126, 217, 87, 0.4);
    transform: translateY(-3px);
}

/* Decorative Background Elements */
.decoration {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    z-index: 1;
}

.circle-1 {
    width: 400px;
    height: 400px;
    background: rgba(126, 217, 87, 0.15);
    top: -100px;
    left: -100px;
}

.circle-2 {
    width: 300px;
    height: 300px;
    background: rgba(255, 222, 89, 0.2);
    bottom: -50px;
    right: -50px;
}

.circle-3 {
    width: 200px;
    height: 200px;
    background: rgba(126, 217, 87, 0.1);
    top: 50%;
    left: 60%;
    transform: translateY(-50%);
}

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

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    display: inline-block;
    position: relative;
}

.section-title .underline {
    width: 60px;
    height: 4px;
    background-color: var(--accent-green);
    margin: 10px auto 0;
    border-radius: 2px;
}

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

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    background: var(--off-white);
    padding: 50px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px var(--shadow-color);
    border: 1px solid rgba(126, 217, 87, 0.1);
}

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

.about-text strong {
    color: var(--accent-green);
    font-size: 1.2rem;
}

/* Projects Section */
.projects-section {
    background-color: var(--off-white);
}

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

.card {
    background: var(--primary-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: all var(--transition-speed) ease;
    border: 1px solid rgba(0,0,0,0.02);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px var(--shadow-color);
    border-color: rgba(126, 217, 87, 0.3);
}

.card-img-placeholder {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.green-bg { background-color: rgba(126, 217, 87, 0.1); }
.yellow-bg { background-color: rgba(255, 222, 89, 0.15); }
.white-bg { background-color: #f0f5f0; }

.card-content {
    padding: 30px;
}

.card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.card-content p {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.card-link {
    color: var(--accent-green);
    font-weight: 600;
    transition: color var(--transition-speed) ease;
}

.card-link:hover {
    color: var(--accent-yellow);
}

/* Contact Section */
.contact-section {
    background-color: var(--primary-white);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-content > p {
    color: var(--text-gray);
    margin-bottom: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    background: var(--off-white);
    padding: 20px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    border: 1px solid rgba(126, 217, 87, 0.1);
    transition: transform var(--transition-speed) ease;
}

.contact-item:hover {
    transform: scale(1.02);
    border-color: var(--accent-yellow);
}

.contact-item .icon {
    font-size: 1.5rem;
}

/* Footer */
footer {
    background-color: #fafdfa;
    padding: 30px 0;
    text-align: center;
    color: var(--text-gray);
    border-top: 1px solid rgba(0,0,0,0.05);
}

/* Responsive */
/* Responsive */
@media (max-width: 900px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .nav-menu ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    header .container {
        flex-direction: column;
        gap: 10px;
        height: auto;
        padding: 15px 20px;
    }
    .hero-section {
        padding-top: 100px;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
    .about-content {
        padding: 20px 15px;
    }
    .grid-container {
        grid-template-columns: 1fr;
    }
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    section {
        padding: 60px 0;
    }
    .card-img-placeholder {
        height: 150px;
    }
    .cta-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
}

/* --- Reusable Animation & Decoration Classes (From Portals) --- */
.chick-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: inline-block;
}

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

.bounce {
    animation: bounce 2s infinite ease-in-out;
}

.bounce-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-yellow);
}

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

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

/* Clouds for cute themes */
.cloud-1, .cloud-2, .cloud-3 {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    filter: blur(15px);
    opacity: 0.6;
    z-index: 0;
}
.cloud-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: -5%;
    background: rgba(255, 222, 89, 0.2);
}
.cloud-2 {
    width: 400px;
    height: 400px;
    bottom: -10%;
    right: -10%;
    background: rgba(167, 227, 138, 0.2);
}
.cloud-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    right: 15%;
    background: rgba(255, 222, 89, 0.3);
}


/* Gateway Portal Cards Custom Themes */
.card-preschool {
    border: 3px dashed rgba(255, 222, 89, 0.5);
    background: #fffdf5;
}
.card-preschool .card-img-placeholder {
    background-color: rgba(167, 227, 138, 0.2);
}
.card-preschool .card-link {
    background-color: #a7e38a;
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
}
.card-preschool .card-link:hover {
    background-color: #8ccf6f;
}
.card-preschool:hover {
    border-color: rgba(255, 222, 89, 0.8);
    box-shadow: 0 15px 30px rgba(255, 222, 89, 0.2);
}

.card-office {
    border: 3px solid rgba(44, 62, 80, 0.2);
    background: #f8f9fa;
}
.card-office .card-img-placeholder {
    background-color: rgba(44, 62, 80, 0.1);
}
.card-office .card-link {
    background-color: #2c3e50;
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
}
.card-office .card-link:hover {
    background-color: #1a252f;
}
.card-office:hover {
    border-color: rgba(44, 62, 80, 0.5);
    box-shadow: 0 15px 30px rgba(44, 62, 80, 0.15);
}

.card-highschool {
    border: 3px solid rgba(142, 68, 173, 0.2);
    background: #fdfafb;
}
.card-highschool .card-img-placeholder {
    background-color: rgba(142, 68, 173, 0.1);
}
.card-highschool .card-link {
    background-color: #8e44ad;
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
}
.card-highschool .card-link:hover {
    background-color: #732d91;
}
.card-highschool:hover {
    border-color: rgba(142, 68, 173, 0.5);
    box-shadow: 0 15px 30px rgba(142, 68, 173, 0.15);
}