/*
Theme Name: 学生日本茶協会 (JTEASA)
Theme URI: https://jteasa.org/ja/
Author: Antigravity
Author URI: 
Description: 若い世代が、伝統を継承し、そして革新し、盛り上げる！学生日本茶協会の公式テーマです。
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: jteasa
*/

:root {
    --primary-color: #2F5C3E; /* Japanese Tea Green */
    --primary-light: #4A8C5F;
    --primary-dark: #1C3825;
    --accent-color: #D4AF37; /* Gold/Brass */
    --bg-color: #FDFCF9;
    --bg-light: #F4F1EA;
    --text-color: #333333;
    --text-light: #666666;
    --white: #FFFFFF;
    
    --font-sans: 'Zen Kaku Gothic New', 'Inter', sans-serif;
    --font-serif: 'Noto Serif JP', serif;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 15px 40px rgba(47, 92, 62, 0.15);
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.3;
}

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

img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-center { text-align: center; }
.text-white { color: var(--white); }
.bg-light { background-color: var(--bg-light); }
.mt-4 { margin-top: 2rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(47, 92, 62, 0.3);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-hero {
    background-color: var(--white);
    color: var(--primary-color);
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-hero:hover {
    background-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-group {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    font-weight: 600;
    margin-top: 1rem;
    position: relative;
}

.link-arrow::after {
    content: '→';
    margin-left: 8px;
    transition: var(--transition);
}

.link-arrow:hover::after {
    transform: translateX(5px);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(253, 252, 249, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 32px;
    margin-right: 32px;
}

.nav ul li a {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav ul li a:hover::after {
    width: 100%;
}

.nav {
    display: flex;
    align-items: center;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
    transform: scale(1.05);
    animation: slowZoom 20s ease-out forwards;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6));
    z-index: -1;
}

.hero-content {
    color: var(--white);
    max-width: 800px;
    padding: 0 24px;
    animation: fadeUp 1s ease-out forwards;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 24px;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 40px;
    font-weight: 500;
    opacity: 0.9;
}

@keyframes slowZoom {
    from { transform: scale(1.05); }
    to { transform: scale(1); }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-badge {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 24px;
    color: var(--primary-dark);
}

.section-header {
    margin-bottom: 64px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 24px;
}

.about-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transform: translateY(0);
    transition: var(--transition);
}

.about-image:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.about-image img {
    display: block;
    width: 100%;
    transition: transform 0.5s ease;
}

.about-image:hover img {
    transform: scale(1.03);
}

/* Education Section */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.card {
    background-color: var(--white);
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.02);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 24px;
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--primary-dark);
}

.card p {
    color: var(--text-light);
}

/* Cooperation Section */
.coop-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.coop-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* Contact Section */
.contact-card {
    background-color: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    overflow: hidden;
}

.contact-info {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 48px;
}

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

.contact-info .section-badge {
    color: var(--accent-color);
}

.contact-info p {
    opacity: 0.9;
    margin-bottom: 32px;
}

.contact-details p {
    margin-bottom: 8px;
    opacity: 1;
}

.contact-form-container {
    padding: 48px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(47, 92, 62, 0.1);
}

.btn-submit {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
    border-radius: 8px;
}

/* Footer */
.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: 80px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand p {
    margin-top: 16px;
    opacity: 0.8;
}

.footer-links h4 {
    margin-bottom: 24px;
    font-size: 1.2rem;
}

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

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

.footer-links ul li a {
    opacity: 0.8;
}

.footer-links ul li a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.6;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .about-grid, .coop-grid {
        grid-template-columns: 1fr;
    }
    .about-image {
        grid-row: 1;
    }
}

@media (max-width: 768px) {
    .nav ul {
        display: none;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .contact-card {
        grid-template-columns: 1fr;
    }
    .contact-info, .contact-form-container {
        padding: 32px 24px;
    }
}