/* =========================================================================
   1. VARIABLES & DESIGN TOKENS
   ========================================================================= */
:root {

    /* Header Logo */
    .logo {
        display: flex;
        align-items: center;
    }

    .logo img {
        height: 40px;
        width: auto;
    }

    --color-primary: #fab53a;
    /* Main Yellow */
    --color-primary-dark: #c8bb86;
    /* Darker Yellow/Gold */
    --color-accent-gray: #9c9da1;
    /* Sub Gray */

    /* Neutral Colors (Cool/Premium Look) */
    --color-text-main: #1a1a1a;
    --color-text-sub: #666666;
    --color-bg-body: #ffffff;
    --color-bg-light: #f9f9f9;
    --color-bg-dark: #121212;
    /* For "Cool" dark sections */
    --color-white: #ffffff;

    /* Typography */
    --font-main: "Noto Sans JP",
    sans-serif;
    --font-en: "Montserrat",
    sans-serif;
    /* For headers/English text */

    /* Spacing */
    --spacing-container-pc: 1200px;
    --spacing-section-padding-pc: 100px 0;
    --spacing-section-padding-sp: 60px 0;

    /* Shadows */
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 0.3s ease;
}

/* =========================================================================
   2. RESET & BASE
   ========================================================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-main);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1rem;
}

/* English Headings for Style */
.en-heading {
    font-family: var(--font-en);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent-gray);
    display: block;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

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

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

ul {
    list-style: none;
}

/* =========================================================================
   3. UTILITIES
   ========================================================================= */
.container {
    max-width: var(--spacing-container-pc);
    margin: 0 auto;
    padding: 0 24px;
}

.pc-only {
    display: block;
}

.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .pc-only {
        display: none;
    }

    .sp-only {
        display: block;
    }
}

.section {
    padding: var(--spacing-section-padding-pc);
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-section-padding-sp);
    }
}

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

.bg-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-white);
}

.bg-dark .en-heading {
    color: var(--color-primary);
}

/* =========================================================================
   4. COMPONENTS
   ========================================================================= */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    border-radius: 50px;
    transition: var(--transition-fast);
    box-shadow: 0 4px 15px rgba(250, 181, 58, 0.3);
}

.btn:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(250, 181, 58, 0.4);
}

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
}

@media (max-width: 768px) {
    .section-title h2 {
        font-size: 1.8rem;
    }
}

/* Cards */
.card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    transition: var(--transition-fast);
}

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