:root {
    --color-primary: #1f6bff;
    --color-primary-light: #5aa7ff;
    --color-primary-dark: #0b3c85;
    --color-accent: #69f0ff;
    --color-bg: #0f172a;
    --color-bg-soft: #111c34;
    --color-text: #f6f9ff;
    --color-text-muted: rgba(246, 249, 255, 0.7);
    --color-card: rgba(17, 28, 52, 0.75);
    --max-width: 1200px;
    --border-radius-lg: 24px;
    --border-radius-md: 18px;
    --border-radius-sm: 12px;
    --shadow-soft: 0 20px 45px rgba(31, 107, 255, 0.25);
    --shadow-card: 0 16px 32px rgba(8, 23, 48, 0.35);
    --transition: all 0.3s ease;
}

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

body {
    font-family: "Poppins", "Nunito", "Hiragino Sans", "ヒラギノ角ゴ ProN", "Yu Gothic", sans-serif;
    background: radial-gradient(circle at top left, rgba(31, 107, 255, 0.18), transparent 45%),
                radial-gradient(circle at 80% 20%, rgba(105, 240, 255, 0.15), transparent 50%),
                var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

.only-desktop {
    display: none;
}

.container {
    width: min(92%, var(--max-width));
    margin: 0 auto;
}

.section {
    padding: 96px 0;
    position: relative;
}

.section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top, rgba(31, 107, 255, 0.08), transparent 60%);
    opacity: 0.6;
    pointer-events: none;
}

.section-grid {
    display: grid;
    gap: clamp(32px, 6vw, 56px);
    align-items: start;
}

.section-heading {
    max-width: 520px;
}

.section-eyebrow {
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.875rem;
    margin-bottom: 12px;
}

.section-heading h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin-bottom: 16px;
    font-weight: 700;
    line-height: 1.3;
}

.section-heading p {
    color: var(--color-text-muted);
    font-size: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 999px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #3b8dff 100%);
    color: #fff;
    box-shadow: 0 12px 30px rgba(31, 107, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(31, 107, 255, 0.45);
}

.btn-secondary {
    border: 1px solid rgba(105, 240, 255, 0.4);
    color: var(--color-accent);
    background: rgba(105, 240, 255, 0.08);
}

.btn-secondary:hover {
    border-color: rgba(105, 240, 255, 0.6);
    background: rgba(105, 240, 255, 0.15);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(18px);
    background: rgba(15, 23, 42, 0.65);
    border-bottom: 1px solid rgba(105, 240, 255, 0.12);
    transition: background 0.4s ease, border-color 0.4s ease;
}

.site-header.scrolled {
    background: rgba(15, 23, 42, 0.9);
    border-color: rgba(105, 240, 255, 0.2);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.logo {
    font-weight: 700;
    letter-spacing: 0.05em;
}

.logo span {
    color: var(--color-accent);
}

.site-nav ul {
    display: flex;
    gap: 24px;
    font-weight: 500;
    font-size: 0.95rem;
}

.site-nav a {
    position: relative;
    padding: 4px 0;
}

.site-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-light), var(--color-accent));
    transition: width 0.3s ease;
}

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

.nav-toggle {
    background: none;
    border: none;
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero */
.hero {
    position: relative;
    padding: 160px 0 120px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(31, 107, 255, 0.85), rgba(15, 23, 42, 0.92));
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(105, 240, 255, 0.4), transparent 55%),
                radial-gradient(circle at 80% 30%, rgba(58, 134, 255, 0.35), transparent 60%);
    mix-blend-mode: screen;
    opacity: 0.8;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.6;
    animation: float 12s infinite ease-in-out;
}

.hero-shape--one {
    width: 380px;
    height: 380px;
    background: rgba(105, 240, 255, 0.4);
    top: -140px;
    right: 18%;
}

.hero-shape--two {
    width: 260px;
    height: 260px;
    background: rgba(31, 107, 255, 0.55);
    bottom: -120px;
    left: 15%;
    animation-delay: -4s;
}

.hero-shape--three {
    width: 180px;
    height: 180px;
    background: rgba(88, 204, 255, 0.45);
    top: 15%;
    left: 42%;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    50% { transform: translateY(-30px) translateX(20px); }
}

.hero-content {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
    gap: clamp(40px, 4vw, 80px);
}

.hero-eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 16px;
}

.hero-text h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-description {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 36px;
}

.hero-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.highlight-item {
    background: rgba(15, 23, 42, 0.38);
    border-radius: var(--border-radius-md);
    padding: 16px 20px;
    box-shadow: inset 0 0 0 1px rgba(105, 240, 255, 0.2);
    text-align: center;
}

.highlight-number {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.highlight-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: 30px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(105, 240, 255, 0.18);
    transform: perspective(1200px) rotateY(-6deg) rotateX(4deg);
    transition: transform 1s ease, box-shadow 1s ease;
}

.hero-image::after {
    content: "";
    position: absolute;
    inset: -30px;
    border-radius: 36px;
    border: 1px solid rgba(105, 240, 255, 0.25);
    opacity: 0.5;
    transition: var(--transition);
}

.hero-image:hover img {
    transform: perspective(1200px) rotateY(0deg) rotateX(0deg) scale(1.02);
    box-shadow: 0 30px 60px rgba(31, 107, 255, 0.45);
}

.hero-image:hover::after {
    opacity: 0.8;
    border-color: rgba(105, 240, 255, 0.4);
}

/* Concept */
.concept-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.concept-card {
    background: var(--color-card);
    border-radius: var(--border-radius-md);
    padding: 32px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.concept-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(105, 240, 255, 0.18), transparent 60%);
    opacity: 0;
    transition: var(--transition);
}

.concept-card:hover {
    transform: translateY(-8px);
}

.concept-card:hover::before {
    opacity: 1;
}

.icon-circle {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(105, 240, 255, 0.18);
    color: var(--color-accent);
    margin-bottom: 18px;
    font-size: 1.4rem;
}

.concept-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.concept-card p {
    color: var(--color-text-muted);
}

/* Services */
.services {
    background: linear-gradient(160deg, rgba(17, 28, 52, 0.95), rgba(15, 23, 42, 0.8));
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 26px;
}

.service-card {
    background: rgba(12, 28, 55, 0.9);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(105, 240, 255, 0.12);
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(105, 240, 255, 0.25);
}

.service-icon {
    width: 58px;
    height: 58px;
    border-radius: 16px;
    background: rgba(31, 107, 255, 0.2);
    color: var(--color-accent);
    display: grid;
    place-items: center;
    font-size: 1.5rem;
}

.service-card ul {
    color: var(--color-text-muted);
    display: grid;
    gap: 8px;
    padding-left: 0;
}

.service-card ul li::before {
    content: "\f14a";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    margin-right: 8px;
    color: var(--color-accent);
}

/* Menu */
.menu {
    background: radial-gradient(circle at 20% 20%, rgba(105, 240, 255, 0.18), transparent 50%),
                rgba(12, 25, 50, 0.88);
}

.menu-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.menu-card {
    background: rgba(17, 40, 80, 0.7);
    border-radius: var(--border-radius-md);
    padding: 28px;
    border: 1px solid rgba(105, 240, 255, 0.12);
    position: relative;
    overflow: hidden;
    transition: transform 0.35s ease, border-color 0.35s ease;
}

.menu-card::after {
    content: attr(data-flavor);
    position: absolute;
    right: -40px;
    top: 20px;
    font-size: 3.4rem;
    color: rgba(105, 240, 255, 0.08);
    transform: rotate(24deg);
    pointer-events: none;
}

.menu-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: rgba(105, 240, 255, 0.25);
}

.menu-flavor {
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 12px;
}

.menu-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(105, 240, 255, 0.2);
    color: var(--color-accent);
    font-size: 0.8rem;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 600;
}

/* Insights */
.insights {
    background: linear-gradient(140deg, rgba(17, 28, 52, 0.92), rgba(15, 23, 42, 0.78));
}

.insights-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 22px;
}

.insight-card {
    background: rgba(15, 30, 55, 0.85);
    border-radius: var(--border-radius-md);
    padding: 32px;
    text-align: center;
    border: 1px solid rgba(105, 240, 255, 0.14);
    box-shadow: var(--shadow-card);
}

.insight-value {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.insight-label {
    color: var(--color-text-muted);
}

/* Timeline */
.timeline {
    position: relative;
    margin-top: 48px;
    display: grid;
    gap: 24px;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: 18px;
    width: 2px;
    background: linear-gradient(180deg, rgba(105, 240, 255, 0.8), rgba(31, 107, 255, 0.4));
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    background: rgba(17, 35, 70, 0.75);
    border: 1px solid rgba(105, 240, 255, 0.15);
    border-radius: var(--border-radius-md);
    padding: 24px 28px 24px 60px;
    box-shadow: var(--shadow-card);
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 26px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 0 6px rgba(105, 240, 255, 0.15);
}

.timeline-date {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 8px;
}

/* Reservation */
.reservation {
    background: linear-gradient(120deg, rgba(15, 23, 42, 0.92), rgba(31, 107, 255, 0.18));
}

.reservation-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
    background: rgba(15, 30, 55, 0.85);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    border: 1px solid rgba(105, 240, 255, 0.15);
    box-shadow: var(--shadow-card);
}

.form-status {
    grid-column: 1 / -1;
    margin-top: 6px;
    padding: 12px 18px;
    border-radius: var(--border-radius-md);
    background: rgba(31, 107, 255, 0.16);
    border: 1px solid rgba(105, 240, 255, 0.24);
    color: var(--color-accent);
    font-weight: 600;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.form-status.visible {
    opacity: 1;
    transform: translateY(0);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid rgba(105, 240, 255, 0.2);
    border-radius: 14px;
    padding: 12px 16px;
    color: var(--color-text);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(105, 240, 255, 0.5);
    box-shadow: 0 0 0 4px rgba(105, 240, 255, 0.2);
}

.form-group.full-width {
    grid-column: 1 / -1;
}

/* Footer */
.site-footer {
    background: rgba(8, 15, 30, 0.9);
    padding: 56px 0 32px;
    border-top: 1px solid rgba(105, 240, 255, 0.12);
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
    align-items: start;
}

.footer-note {
    color: var(--color-text-muted);
    margin-top: 12px;
}

.footer-info ul {
    display: grid;
    gap: 10px;
    color: var(--color-text-muted);
}

.footer-info li i {
    color: var(--color-accent);
    margin-right: 10px;
}

.footer-social p {
    margin-bottom: 12px;
    font-weight: 600;
}

.social-links {
    display: flex;
    gap: 14px;
}

.social-links a {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    border: 1px solid rgba(105, 240, 255, 0.2);
    transition: var(--transition);
}

.social-links a:hover {
    border-color: rgba(105, 240, 255, 0.4);
    background: rgba(105, 240, 255, 0.12);
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

/* Scroll top */
.scroll-top {
    position: fixed;
    bottom: 28px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(31, 107, 255, 0.9), rgba(105, 240, 255, 0.9));
    color: #fff;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.4);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Media Queries */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
        max-width: 460px;
        margin: 0 auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .section-grid {
        grid-template-columns: 1fr;
    }

    .only-desktop {
        display: none;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 0.95rem;
    }

    .site-nav {
        position: fixed;
        inset: 0 0 auto auto;
        top: 70px;
        background: rgba(8, 15, 30, 0.95);
        border-radius: var(--border-radius-md);
        padding: 20px 28px;
        transform: translateY(-20px);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        box-shadow: 0 18px 44px rgba(8, 15, 30, 0.45);
    }

    .site-nav.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .site-nav ul {
        flex-direction: column;
        gap: 18px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.open span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .reservation-form {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .section {
        padding: 72px 0;
    }

    .hero {
        padding: 140px 0 100px;
    }

    .hero-highlights {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }

    .timeline::before {
        left: 12px;
    }

    .timeline-item {
        padding-left: 52px;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-image::after {
        inset: -20px;
    }

    .highlight-item {
        padding: 12px 10px;
    }
}