/* ---
Variables & Modern Settings
--- */
:root {
    /* Colors - Cool, Modern Dark Theme */
    --color-background: #0a0a0a; /* Almost black for deep contrast */
    --color-surface: #1a1a1a;    /* Surface color for cards, slightly lighter */
    --color-primary: #007CF0;   /* Electric Blue for primary actions and highlights */
    --color-primary-glow: rgba(0, 124, 240, 0.5);
    --color-text-primary: #f0f0f0; /* Primary text, slightly off-white */
    --color-text-secondary: #a0a0a0; /* Secondary text for less emphasis */
    --color-border: rgba(255, 255, 255, 0.1);

    /* Fonts */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Noto Sans JP', sans-serif;

    /* Layout */
    --container-width: 1120px;
    --spacing-base: 8px;
}

/* ---
Global & Animation Styles
--- */
@keyframes kenburns-zoom {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.1);
    }
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.8;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-text-primary);
    letter-spacing: 0.5px;
}

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

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: color 0.2s ease;
}

a:hover {
    color: #fff;
}

section {
    overflow: hidden; /* Prevent AOS animations from showing scrollbars */
}

/* ---
Layout Container
--- */
.hero__inner, .proof__inner, .benefits__inner, .testimonials__inner, .faq__inner, .closing__inner, .footer__inner {
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding: calc(var(--spacing-base) * 12) calc(var(--spacing-base) * 3); /* 96px 24px */
}

@media (max-width: 768px) {
    .hero__inner, .proof__inner, .benefits__inner, .testimonials__inner, .faq__inner, .closing__inner, .footer__inner {
        padding: calc(var(--spacing-base) * 10) calc(var(--spacing-base) * 2); /* 80px 16px */
    }
}

/* ---
BEM Blocks - Modern & Cool
--- */

/* Hero Section */
.hero {
    position: relative;
    color: #fff;
    text-align: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.8)), url('img/DSC_0822.jpg') no-repeat center center;
    background-size: cover;
    animation: kenburns-zoom 20s infinite alternate ease-in-out;
    z-index: -1;
}

.hero__title {
    font-size: 4.5rem;
    color: #fff;
    text-shadow: 0 0 20px rgba(0,0,0,0.5);
    margin-bottom: calc(var(--spacing-base) * 2);
}

.hero__subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: calc(var(--spacing-base) * 5);
    color: var(--color-text-secondary);
}

.hero__cta, .closing__cta {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-primary);
    font-size: 1.2rem;
    padding: calc(var(--spacing-base) * 2) calc(var(--spacing-base) * 5);
    border-radius: 50px;
    border: 1px solid var(--color-primary);
    transition: all 160ms ease;
    box-shadow: 0 0 15px var(--color-primary-glow), 0 0 20px var(--color-primary-glow);
}

.hero__cta:hover, .closing__cta:hover {
    background: transparent;
    color: var(--color-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 0 25px var(--color-primary-glow), 0 0 35px var(--color-primary-glow);
}

@media (max-width: 768px) {
    .hero__title { font-size: 3rem; }
    .hero__subtitle { font-size: 1.1rem; }
}

/* Shared Section Styles */
.proof, .benefits, .testimonials, .faq, .closing {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.proof__heading, .benefits__heading, .testimonials__heading, .faq__heading, .closing__heading {
    font-size: 3rem;
    text-align: center;
    margin-bottom: var(--spacing-base);
}

.proof__subheading, .benefits__subheading {
    font-size: 1.2rem;
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-base) * 8);
}

/* Proof Section */
.proof__logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: calc(var(--spacing-base) * 6);
}
.proof__logo-item img {
    max-height: 150px; /* Control logo size */
    width: auto; /* Maintain aspect ratio */
    filter: brightness(0.7) contrast(1.2) grayscale(50%);
    opacity: 0.5;
    transition: all 300ms ease;
}
.proof__logo-item img:hover {
    filter: brightness(1) contrast(1) grayscale(0%);
    opacity: 1;
    transform: scale(1.1);
}
.proof__note {
    margin-top: calc(var(--spacing-base) * 4);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-align: center;
}

/* Benefits Section (Glassmorphism) */
.benefits__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-base) * 4);
    margin-top: calc(var(--spacing-base) * 6);
}
.benefit-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    padding: calc(var(--spacing-base) * 5);
    border-radius: 16px;
    text-align: center;
    transition: transform 200ms ease, background 200ms ease;
}
.benefit-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(0, 124, 240, 0.5);
}
.benefit-card__icon {
    margin: 0 auto calc(var(--spacing-base) * 3);
    width: 80px;
    height: 80px;
}
.benefit-card__icon img {
    border-radius: 50%;
    object-fit: cover;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
}
.benefit-card__title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-base);
    color: var(--color-primary);
}
.benefit-card__text {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

/* Testimonials Section */
.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-base) * 4);
    margin-top: calc(var(--spacing-base) * 6);
}
.testimonial-card {
    background-color: var(--color-surface);
    padding: calc(var(--spacing-base) * 4);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    border-left: 5px solid var(--color-primary);
}
.testimonial-card__text {
    margin-bottom: calc(var(--spacing-base) * 2);
    font-size: 1.1rem;
}
.testimonial-card__author {
    font-weight: 700;
    text-align: right;
    color: var(--color-primary);
}

/* FAQ Section */
.faq__list {
    max-width: 800px;
    margin: calc(var(--spacing-base) * 8) auto 0;
}
.faq-item {
    background-color: var(--color-surface);
    margin-bottom: calc(var(--spacing-base) * 2);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    transition: background-color 200ms ease;
}
.faq-item[open] {
    background-color: rgba(0, 124, 240, 0.1);
}
.faq-item__question {
    padding: calc(var(--spacing-base) * 2.5) calc(var(--spacing-base) * 3);
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-item__question::-webkit-details-marker { display: none; }
.faq-item__question::after {
    content: '+';
    font-size: 2rem;
    color: var(--color-primary);
    transition: transform 200ms ease;
}
.faq-item[open] > .faq-item__question::after {
    transform: rotate(45deg);
}
.faq-item__answer {
    padding: 0 calc(var(--spacing-base) * 3) calc(var(--spacing-base) * 3);
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
}

/* Closing Section */
.closing {
    background: linear-gradient(to top, #0a0a0a, rgba(10,10,10,0.7));
    text-align: center;
    border-bottom: none;
}
.closing__heading {
    color: #fff;
    font-size: 2.8rem;
}
.closing__text {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin: calc(var(--spacing-base) * 2) 0 calc(var(--spacing-base) * 5);
}
.closing__note {
    margin-top: calc(var(--spacing-base) * 3);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Footer */
.footer {
    background-color: #0a0a0a;
    border-top: 1px solid var(--color-border);
}
.footer__inner {
    padding: calc(var(--spacing-base) * 5) calc(var(--spacing-base) * 3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-base) * 2);
}
.footer__nav {
    display: flex;
    gap: calc(var(--spacing-base) * 4);
}
.footer__link {
    font-size: 1rem;
    color: var(--color-text-secondary);
    transition: color 200ms ease;
}
.footer__link:hover {
    color: var(--color-primary);
}
.footer__copy {
    font-size: 0.9rem;
    color: #666;
}

@media (max-width: 768px) {
    .proof__heading, .benefits__heading, .testimonials__heading, .faq__heading, .closing__heading { font-size: 2.2rem; }
}