/*
Theme Name: GPT Education Theme
Theme URI: https://suwon.manna-plus.kr
Description: GPT 교육 - 커스텀 워드프레스 테마
Version: 1.0.0
Author: Manna Plus
Text Domain: gpt-education-theme
*/

:root {
    --primary-color: #96e6a1;
    --primary-dark: #7dd88a;
    --primary-light: #b8f0c0;
    --secondary-color: #4a9f5c;
    --text-color: #2d3748;
    --text-light: #718096;
    --bg-color: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 20px rgba(150, 230, 161, 0.15);
    --shadow-lg: 0 15px 50px rgba(150, 230, 161, 0.25);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --transition: all 0.3s ease;
    --font-main: 'Noto Serif KR', Georgia, serif;
    --border-radius: 16px;
    --border-radius-sm: 10px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.8;
    overflow-x: hidden;
    position: relative;
}

/* Wave Pattern Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%2396e6a1' fill-opacity='0.1' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
    z-index: -1;
    pointer-events: none;
}

/* Mouse Trail Canvas */
#mouse-trail {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

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

/* CTA Button Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.site-logo a {
    color: inherit;
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: 40px;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

/* Underline Hover Button */
.main-navigation a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.main-navigation a:hover::after,
.main-navigation a.current::after {
    width: 100%;
}

.header-cta {
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: #ffffff;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* Hero Section - Card Grid Style */
.hero-section {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 140px 20px 80px;
    background: linear-gradient(135deg, rgba(150, 230, 161, 0.1) 0%, rgba(74, 159, 92, 0.05) 100%);
}

.hero-content {
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

/* Underline Hover Button */
.btn-underline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 0;
    color: var(--secondary-color);
    font-size: 1.1rem;
    font-weight: 600;
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
}

.btn-underline::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.btn-underline:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.btn-underline:hover {
    color: var(--primary-dark);
}

/* Glassmorphism Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: var(--transition);
}

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

.glass-card:hover::before {
    opacity: 1;
}

.glass-card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
}

.glass-card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.glass-card-title a {
    color: inherit;
}

.glass-card-title a:hover {
    color: var(--secondary-color);
}

.glass-card-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 15px;
}

.glass-card-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.glass-card-meta i {
    color: var(--primary-color);
}

/* Content Section */
.content-section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-color);
}

.section-title span {
    color: var(--secondary-color);
}

/* Page Styles */
.page-header {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, rgba(150, 230, 161, 0.15) 0%, rgba(74, 159, 92, 0.08) 100%);
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 15px;
}

.page-header .breadcrumb {
    color: var(--text-light);
}

.page-header .breadcrumb a {
    color: var(--secondary-color);
}

.page-content {
    padding: 60px 0;
}

.page-content .container {
    max-width: 900px;
}

/* Forms */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 15px 18px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: var(--font-main);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(150, 230, 161, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: #ffffff;
}

/* FAQ */
.faq-item {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 22px 25px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    font-family: var(--font-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    color: var(--text-color);
}

.faq-question:hover {
    color: var(--secondary-color);
}

.faq-answer {
    padding: 0 25px 22px;
    color: var(--text-light);
    line-height: 1.8;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* 404 Page */
.error-404 {
    text-align: center;
    padding: 150px 20px;
}

.error-404 h1 {
    font-size: 8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 20px;
}

.error-404 h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.error-404 p {
    color: var(--text-light);
    margin-bottom: 30px;
}

/* Search */
.search-form {
    display: flex;
    gap: 10px;
    max-width: 600px;
    margin: 0 auto 40px;
}

.search-form input {
    flex: 1;
    padding: 15px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: var(--font-main);
}

.search-form button {
    padding: 15px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

/* Footer */
.site-footer {
    background: linear-gradient(135deg, #2d3748, #1a202c);
    color: #ffffff;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: var(--border-radius-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.pagination a:hover,
.pagination .current {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    border-color: transparent;
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        padding: 20px;
        flex-direction: column;
        gap: 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .main-navigation.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: 0;
    }

    .main-navigation li {
        border-bottom: 1px solid var(--border-color);
    }

    .main-navigation a {
        display: block;
        padding: 15px 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .error-404 h1 {
        font-size: 5rem;
    }
}

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}