@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
    /* Hakuten-inspired Palette */
    --primary-color: #0b1a33;
    /* Deep Navy */
    --secondary-color: #f3f4f6;
    /* Very Light Gray */
    --accent-color: #c5a059;
    /* Sophisticated Gold */
    --text-primary: #111827;
    /* Almost Black */
    --text-secondary: #4b5563;
    /* Gray */
    --white: #ffffff;
    --bg-light: #f9fafb;

    /* Typography */
    --font-main: 'Noto Sans JP', sans-serif;
}

body {
    font-family: var(--font-main);
    color: var(--text-primary);
    line-height: 1.8;
    letter-spacing: 0.08em;
    /* Wider letter spacing */
    background-color: var(--white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-main);
    font-weight: 700;
    line-height: 1.5;
    color: var(--primary-color);
    letter-spacing: 0.1em;
    /* Even wider for headings */
}

/* Layout */
.section-padding {
    padding: 8rem 1.5rem;
    /* Increased vertical padding */
}

/* Buttons - Flat & Minimal */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 3rem;
    border-radius: 2px;
    /* Sharp corners */
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--primary-color);
    letter-spacing: 0.1em;
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
    transform: translateY(0);
    box-shadow: none;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--primary-color);
    padding: 1rem 3rem;
    border-radius: 2px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--primary-color);
    letter-spacing: 0.1em;
}

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

/* Cards - Flat, No Shadow */
.card {
    background-color: var(--white);
    border-radius: 4px;
    transition: transform 0.3s ease;
    border: 1px solid #e5e7eb;
    /* Subtle border instead of shadow */
    box-shadow: none;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    /* Gold accent on hover */
    box-shadow: none;
}

/* Scroll Animation */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Utility for Gold Accent Text */
.text-accent {
    color: var(--accent-color);
}

/* Header Scrolled State */
#main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}