:root {
    /* Colors */
    --color-bg: #F9F9F9;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-heading: #111111;
    --color-white: #FFFFFF;

    /* Theme Colors */
    --color-medical-1: #4A90E2;
    /* Light Blue */
    --color-medical-2: #B8E986;
    /* Yellow Green */
    --color-beauty: #C5839C;
    /* Sophisticated Pink */
    --color-inbound: #B71C1C;
    /* Deep Red */
    --color-entrepreneur: #0D47A1;
    /* Navy Blue */
    --color-native: #F57C00;
    /* Warm Orange */

    /* Fonts */
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 32px;
    --spacing-lg: 64px;
    --spacing-xl: 100px;

    /* Layout */
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    color: var(--color-heading);
    line-height: 1.4;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s;
}

a:hover {
    opacity: 0.7;
}

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

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
}

.header-container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.logo-main {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-heading);
}

.logo-sub {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-list a {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    color: var(--color-heading);
}

.btn-contact {
    padding: 10px 25px;
    background-color: var(--color-heading);
    color: var(--color-white) !important;
    border-radius: 2px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-heading);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background-image set inline in HTML/PHP for dynamic path */
    background-size: cover;
    background-position: center;
    filter: brightness(0.6);
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--color-white);
    padding: 0 20px;
    background: rgba(0, 0, 0, 0.3);
    /* Add semi-transparent background mainly for text area readability if needed, or keeping it subtle */
    border-radius: 8px;
    padding: 30px;
    backdrop-filter: blur(2px);
}

.weapon-text {
    color: #FFD700 !important;
    /* Gold color for "Your Weapon" */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.9);
}

.mobile-break {
    display: none;
}

@media (max-width: 768px) {
    .mobile-break {
        display: block;
    }
}

.hero-title {
    font-family: var(--font-sans);
    /* Changed to Sans for better legibility */
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    /* Stronger shadow */
    letter-spacing: 0.05em;
    color: var(--color-white) !important;
}

.hero-title .times {
    font-size: 0.8em;
    vertical-align: middle;
    margin: 0 10px;
    color: #FFD700;
    /* Gold accent */
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.hero-title span {
    color: var(--color-white);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    opacity: 0.9;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s forwards;
    display: inline-block;
}

.delay-1 {
    animation-delay: 0.3s;
}

.delay-2 {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Intro/Concept Section */
.intro-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background-color: var(--color-white);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.1em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--color-heading);
    margin: 15px auto 0;
}

.intro-text {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    color: var(--color-text-light);
}

/* Courses Section */
.course-section {
    padding: var(--spacing-xl) 0;
    overflow: hidden;
}

.course-content {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.course-content.reverse {
    flex-direction: row-reverse;
}

.course-text-wrapper {
    flex: 1;
}

.course-image-wrapper {
    flex: 1;
    position: relative;
}

.course-image {
    width: 100%;
    height: auto;
    border-radius: 4px;
    /* Subtle radius */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.4s ease;
}

.course-section:hover .course-image {
    transform: translateY(-5px);
}

.course-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.course-title {
    font-size: 2rem;
    margin-bottom: 20px;
    position: relative;
    padding-left: 20px;
}

.course-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    bottom: 5px;
    width: 4px;
    background-color: currentColor;
}

.course-description {
    margin-bottom: 30px;
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.btn-course {
    display: inline-block;
    padding: 12px 30px;
    border: 1px solid currentColor;
    border-radius: 2px;
    font-family: var(--font-serif);
    font-weight: 500;
    letter-spacing: 0.1em;
    transition: all 0.3s;
}

.btn-course:hover {
    background-color: currentColor;
    color: var(--color-white);
}

/* Specific Course Styling */
.course-section.medical {
    background-color: #F0F8FF;
}

.medical .course-label {
    color: var(--color-medical-1);
}

.medical .course-title {
    color: var(--color-medical-1);
}

.medical .btn-course {
    color: var(--color-medical-1);
}

.medical .btn-course:hover {
    color: var(--color-white);
    background-color: var(--color-medical-1);
}

.course-section.beauty {
    background-color: #FFF0F5;
}

.beauty .course-label {
    color: var(--color-beauty);
}

.beauty .course-title {
    color: var(--color-beauty);
}

.beauty .btn-course {
    color: var(--color-beauty);
}

.beauty .btn-course:hover {
    color: var(--color-white);
    background-color: var(--color-beauty);
}

.course-section.inbound {
    background-color: #FFF5F5;
}

.inbound .course-label {
    color: var(--color-inbound);
}

.inbound .course-title {
    color: var(--color-inbound);
}

.inbound .btn-course {
    color: var(--color-inbound);
}

.inbound .btn-course:hover {
    color: var(--color-white);
    background-color: var(--color-inbound);
}

.course-section.entrepreneur {
    background-color: #F0F4FF;
}

.entrepreneur .course-label {
    color: var(--color-entrepreneur);
}

.entrepreneur .course-title {
    color: var(--color-entrepreneur);
}

.entrepreneur .btn-course {
    color: var(--color-entrepreneur);
}

.entrepreneur .btn-course:hover {
    color: var(--color-white);
    background-color: var(--color-entrepreneur);
}

.course-section.native {
    background-color: #FFF8E1;
}

.native .course-label {
    color: var(--color-native);
}

.native .course-title {
    color: var(--color-native);
}

.native .btn-course {
    color: var(--color-native);
}

.native .btn-course:hover {
    color: var(--color-white);
    background-color: var(--color-native);
}


/* Contact Section */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.contact-text {
    text-align: center;
    margin-bottom: 40px;
    color: var(--color-text-light);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-heading);
}

.btn-submit {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: var(--color-heading);
    color: var(--color-white);
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-family: var(--font-serif);
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-submit:hover {
    background-color: #333;
}

/* Footer */
.footer {
    background-color: #111;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-sub {
    font-size: 0.8rem;
    font-family: var(--font-sans);
    color: #999;
    letter-spacing: 0.1em;
}

.copyright {
    font-size: 0.8rem;
    color: #666;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .course-content,
    .course-content.reverse {
        flex-direction: column;
    }

    .course-image-wrapper {
        width: 100%;
        order: -1;
    }

    .course-text-wrapper {
        width: 100%;
        text-align: center;
    }

    .course-title::before {
        display: none;
    }

    .course-title {
        padding-left: 0;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        /* Todo: Implement Mobile Menu JS to toggle this */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        padding: 20px 0;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: 20px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-bg {
        background-position: center;
    }
}