/* 
    Y style Yokohama - Premium Stylesheet
    Designed by Google DeepMind (Agentic UI)
*/

:root {
    /* Color Palette */
    --color-primary-red: #E60012; /* Brand Red based on logo */
    --color-primary-dark: #1F1F1F;
    --color-bg-light: #FBF9F7; /* Soft bright background */
    --color-bg-white: #FFFFFF;
    
    /* Sub Colors: Beige and Brown Beige */
    --color-sub-beige: #F5EFEB; /* Light beige for card backgrounds, sections */
    --color-sub-brown: #C8B6A6; /* Brown beige for borders and separators */
    --color-sub-brown-dark: #A58B74;
    
    /* Text Colors */
    --color-text-main: #333333;
    --color-text-muted: #666666;
    --color-white: #FFFFFF;
    
    /* Typography */
    --font-sans: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', 'MS PMincho', serif;
    --font-serif: 'Cormorant Garamond', 'Noto Serif JP', 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', 'MS PMincho', serif;
    
    /* Transitions & Shadows */
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-soft: 0 10px 40px rgba(0,0,0,0.05);
    --shadow-hover: 0 15px 50px rgba(0,0,0,0.1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography Utilities */
.text-center { text-align: center; }
.text-accent { color: var(--color-primary-red); }

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(230,0,18,0.08);
    color: var(--color-primary-red);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.bg-light { background-color: var(--color-bg-light); }
.bg-white { background-color: var(--color-bg-white); }
.bg-beige { background-color: var(--color-sub-beige); }

/* Components: Buttons */
.btn-primary {
    display: inline-block;
    background-color: var(--color-primary-red);
    color: var(--color-white);
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    border: 2px solid var(--color-primary-red);
    box-shadow: 0 4px 15px rgba(230,0,18,0.2);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-primary-red);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(230,0,18,0.3);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* Navbar */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-smooth);
}

.glass-nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid var(--color-sub-beige);
}

.glass-nav.scrolled .nav-item {
    color: var(--color-primary-dark);
}

.glass-nav.all-pages {
    background: rgba(255, 255, 255, 0.98);
    padding: 12px 0;
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid var(--color-sub-beige);
}
.glass-nav.all-pages .nav-item {
    color: var(--color-primary-dark);
}
.glass-nav.all-pages .menu-toggle .bar {
    background-color: var(--color-primary-dark) !important;
}
.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
    align-items: center;
}

.logo img {
    height: 90px;
    width: auto;
    object-fit: contain;
    transition: height 0.4s ease;
}

/* スクロール時や下層ページでは少し小さくして表示領域を確保 */
.glass-nav.scrolled .logo img,
.glass-nav.all-pages .logo img {
    height: 60px;
}

@media (max-width: 768px) {
    .logo img {
        height: 80px;
    }
    .glass-nav.scrolled .logo img,
    .glass-nav.all-pages .logo img {
        height: 50px;
    }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-item {
    color: var(--color-white); /* White on top hero, dark when scrolled */
    text-decoration: none;
    font-weight: 500;
    font-size: 1.15rem;
    white-space: nowrap;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-item::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-primary-red);
    transition: var(--transition-smooth);
}

.nav-item:hover::after, .nav-item.active::after {
    width: 100%;
}

.nav-item:hover, .nav-item.active {
    color: var(--color-primary-red) !important;
}

.hero-stats-link {
    text-align: center;
    color: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.hero-stats-title::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--color-primary-red);
    transition: var(--transition-smooth);
}

.hero-stats-link:hover .hero-stats-title::after {
    width: 100%;
}

.hero-stats-link:hover {
    color: var(--color-primary-red) !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle .bar {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary-dark);
    transition: var(--transition-smooth);
}
.glass-nav:not(.scrolled):not(.all-pages) .menu-toggle .bar {
    background-color: var(--color-white);
}

/* Page Header (Sub pages) */
.page-header {
    padding: 120px 0 60px;
    background: var(--color-sub-beige);
    text-align: center;
}
.page-header h1 {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: var(--color-primary-dark);
}
.page-header p {
    color: var(--color-primary-red);
    font-weight: 500;
    margin-top: 0.5rem;
    letter-spacing: 2px;
}

/* Cards & Layouts */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }

/* Beige Border Decor */
.img-border-beige {
    border: 8px solid var(--color-sub-beige);
    border-radius: 8px;
    width: 100%;
    height: auto;
    box-shadow: var(--shadow-soft);
}
.box-border-brown {
    border: 2px solid var(--color-sub-brown);
    padding: 2.5rem;
    border-radius: 12px;
    background: var(--color-bg-white);
}

/* Course Styling */
.course-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.course-item {
    background: var(--color-sub-beige);
    padding: 2rem;
    border-radius: 12px;
    transition: var(--transition-smooth);
    border-left: 4px solid var(--color-primary-red);
}

.course-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-soft);
}

.course-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary-dark);
}

.course-price {
    font-weight: 700;
    color: var(--color-text-main);
    display: inline-block;
    padding-bottom: 0.5rem;
    border-bottom: 1px dotted var(--color-sub-brown);
    margin-bottom: 1rem;
}

/* Badge specific for courses */
.course-tag {
    background: var(--color-sub-brown);
    color: var(--color-white);
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 1rem;
}

/* Step Card */
.step-card {
    background: var(--color-bg-white);
    padding: 2rem;
    text-align: center;
    border-radius: 10px;
    border: 1px solid var(--color-sub-beige);
    position: relative;
    box-shadow: var(--shadow-soft);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--color-primary-red);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin: 0 auto 1rem;
}

.step-arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--color-sub-brown);
    margin: 1rem 0;
}

/* Contact Links */
.contact-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}
.btn-line {
    background: #00B900;
    color: white;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(0, 185, 0, 0.3);
}
.btn-line:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 185, 0, 0.4);
}

/* Footer - 4 Column Layout */
.footer {
    background: #0f0c0b; /* Very dark brown/black */
    color: #999;
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
    text-align: left;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 1.5rem;
}

.footer-brand .footer-logo img {
    height: 40px;
    margin-bottom: 0;
}

.footer-brand .logo-text {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--color-sub-brown);
    letter-spacing: 2px;
}

.footer-catchphrase {
    color: #ddd;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.footer-address {
    font-size: 0.85rem;
    line-height: 1.8;
    color: #777;
}

.footer-heading {
    font-family: var(--font-serif);
    color: var(--color-sub-brown);
    font-size: 1.2rem;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    font-style: italic;
    font-weight: 400;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 1rem;
}

.footer-links a {
    color: #888;
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--color-sub-brown);
}

.footer-phone {
    color: var(--color-sub-brown);
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.footer-hours {
    font-size: 0.85rem;
    color: #777;
    white-space: nowrap;
}

.copyright {
    border-top: 1px solid #222;
    padding-top: 2rem;
    text-align: left;
    font-size: 0.8rem;
    color: #555;
    margin-top: 0;
}

@media (max-width: 991px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 576px) {
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-brand .footer-logo { justify-content: center; }
    .copyright { text-align: center; }
    .footer-address, .info-row { text-align: center; }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 991px) {
    .grid-2 { grid-template-columns: 1fr; gap: 2rem; }
    .grid-3 { grid-template-columns: 1fr; }
    .course-list { grid-template-columns: 1fr; }
    .contact-actions { flex-direction: column; }
}

@media (max-width: 768px) {
    .course-item { padding: 1.5rem !important; }
    .box-border-brown { padding: 1.5rem !important; }
    [style*="padding: 2.5rem"] { padding: 1.5rem !important; }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 80%;
        background: var(--color-white);
        flex-direction: column;
        justify-content: center;
        transition: var(--transition-smooth);
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    }
    .nav-links.active {
        right: 0;
    }
    .nav-item { color: var(--color-primary-dark) !important; font-size: 1.2rem; }
    .menu-toggle { display: flex; }
    .section { padding: 4rem 0; }
    .page-header h1 { font-size: 2.2rem; }
}

/* Hero Section (only index) */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('assets/img_academy.png') center/cover no-repeat; /* Updated to user's AI mockup img */
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: slideUp 1s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 2.5rem;
    animation: slideUp 1s cubic-bezier(0.25, 0.8, 0.25, 1) 0.2s forwards;
    letter-spacing: 2px;
}

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

/* Contact Form & Info Styles */
.contact-form {
    background: var(--color-bg-white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.03);
    text-align: left;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}
.form-group label .req {
    color: var(--color-sub-brown-dark);
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--color-sub-beige);
    background: #FCFAf8;
    border-radius: 6px;
    font-family: inherit;
    color: var(--color-text-main);
    transition: var(--transition-smooth);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-sub-brown-dark);
    background: var(--color-bg-white);
}

.info-row {
    display: flex;
    gap: 1rem;
    text-align: left;
    margin-bottom: 2rem;
}
.info-icon {
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-sub-brown);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-red);
    background: var(--color-bg-white);
    flex-shrink: 0;
    font-weight: bold;
}
.info-text h4 {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: 5px;
}
.info-text p {
    font-size: 0.95rem;
    color: var(--color-primary-dark);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; gap: 0; margin-bottom: 0; }
    .contact-form { padding: 2rem 1.5rem; }
    .nav-container { justify-content: space-between; gap: 0; width: 100%; }
}