@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;600;700&family=Shippori+Mincho:wght@400;600;800&family=Inter:wght@300;400;500&family=Noto+Sans+JP:wght@300;400;500&display=swap');

:root {
    --bg-primary: #FAF8F5;
    --bg-secondary: #F3ECE3;
    --bg-dark: #142019;
    --bg-dark-trans: rgba(20, 32, 25, 0.85);
    --text-primary: #2C302E;
    --text-secondary: #656C68;
    --text-light: #FAF8F5;
    --accent-gold: #B38E50;
    --accent-gold-hover: #96743A;
    --accent-green: #2D4C3A;
    --accent-green-hover: #1E3326;
    --border-color: rgba(179, 142, 80, 0.3);
    --font-serif: 'Shippori Mincho', 'Noto Serif JP', serif;
    --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

h1, h2, h3, h4, .serif {
    font-family: var(--font-serif);
    font-weight: 500;
}

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

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-gold);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold-hover);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

header.scrolled {
    padding: 1rem 3rem;
    background-color: var(--bg-dark-trans);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(179, 142, 80, 0.15);
}

header.scrolled .logo,
header.scrolled nav a {
    color: var(--text-light);
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    color: var(--text-light);
    transition: var(--transition-smooth);
}

header:not(.scrolled) .logo {
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.logo .title {
    font-size: 1.5rem;
    letter-spacing: 0.2em;
    font-weight: 600;
}

.logo .subtitle {
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    opacity: 0.8;
}

nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

nav a {
    color: var(--text-light);
    font-family: var(--font-serif);
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    position: relative;
    padding: 0.5rem 0;
}

header:not(.scrolled) nav a {
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--accent-gold);
    transition: var(--transition-smooth);
}

nav a:hover {
    color: var(--accent-gold);
}

nav a:hover::after {
    width: 100%;
}

.btn-reserve {
    background-color: var(--accent-gold);
    color: var(--text-light) !important;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.btn-reserve:hover {
    background-color: var(--accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(179, 142, 80, 0.4);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background-color: var(--text-light);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-right: 10%;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85);
    animation: zoomOut 20s infinite alternate;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 30%, rgba(0, 0, 0, 0.4) 100%),
                linear-gradient(to bottom, rgba(20,32,25,0.4) 0%, transparent 40%, rgba(20,32,25,0.6) 100%);
    z-index: 1;
}

@keyframes zoomOut {
    0% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--text-light);
    display: flex;
    flex-direction: row-reverse;
    align-items: flex-start;
    gap: 3rem;
}

.vertical-text {
    writing-mode: vertical-rl;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1.5s ease forwards;
}

.vertical-text.delay-1 {
    animation-delay: 0.5s;
}

.vertical-text.delay-2 {
    animation-delay: 1s;
}

.vertical-text h1 {
    font-size: clamp(1.2rem, 4.5vh, 2.8rem);
    letter-spacing: 0.4em;
    line-height: 1.5;
}

.vertical-text p {
    font-family: var(--font-serif);
    font-size: clamp(0.9rem, 2.2vh, 1.25rem);
    letter-spacing: 0.3em;
    line-height: 1.8;
    margin-top: clamp(1rem, 3vh, 2rem);
}

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

.hero-scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    z-index: 2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero-scroll-hint span {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--text-light), transparent);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* Global Sections */
section {
    padding: 8rem 10%;
    position: relative;
}

.section-bg-alt {
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-subtitle {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--accent-gold);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.8rem;
}

.section-title {
    font-size: 2.2rem;
    letter-spacing: 0.25em;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    padding-bottom: 1.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 1px;
    background-color: var(--accent-gold);
}

/* Concept Section */
.concept-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: center;
}

.concept-images {
    position: relative;
    height: 480px;
}

.concept-img-wrapper {
    position: absolute;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-radius: 2px;
}

.concept-img-main {
    top: 0;
    left: 0;
    width: 80%;
    height: 80%;
    z-index: 2;
}

.concept-img-sub {
    bottom: 0;
    right: 0;
    width: 60%;
    height: 60%;
    z-index: 1;
    border: 5px solid var(--bg-primary);
}

.concept-images img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.concept-images:hover img {
    transform: scale(1.05);
}

.concept-text {
    padding-left: 2rem;
}

.concept-text h3 {
    font-size: 1.8rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: var(--accent-green);
    letter-spacing: 0.1em;
}

.concept-text p {
    color: var(--text-secondary);
    margin-bottom: 1.8rem;
    text-align: justify;
}

/* Onsen Section */
.onsen-intro {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: center;
    margin-bottom: 6rem;
}

.onsen-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent-green);
    letter-spacing: 0.1em;
}

.onsen-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.onsen-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: var(--bg-primary);
    padding: 2.5rem 2rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(45, 76, 58, 0.08);
    border-color: var(--accent-gold);
}

.feature-icon {
    font-size: 2rem;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
}

.feature-card h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.onsen-image-showcase {
    position: relative;
    height: 500px;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.onsen-image-showcase img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Rooms & Cuisine Section */
.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
}

.grid-card {
    background-color: var(--bg-primary);
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
}

.grid-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-img-wrapper {
    height: 350px;
    overflow: hidden;
    position: relative;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.grid-card:hover .card-img-wrapper img {
    transform: scale(1.06);
}

.card-badge {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    background-color: var(--accent-gold);
    color: var(--text-light);
    padding: 0.4rem 1.2rem;
    font-size: 0.8rem;
    font-family: var(--font-serif);
    letter-spacing: 0.1em;
}

.card-info {
    padding: 2.5rem;
}

.card-info h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    letter-spacing: 0.08em;
}

.card-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.card-features {
    display: flex;
    gap: 1.5rem;
    border-top: 1px solid var(--bg-secondary);
    padding-top: 1.2rem;
}

.card-feature-item {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 5px;
}

.card-feature-item span {
    color: var(--accent-gold);
}

/* Reservation Simulator Section */
.booking-section {
    background-color: var(--accent-green);
    color: var(--text-light);
    border-radius: 4px;
    padding: 6rem;
    box-shadow: 0 20px 50px rgba(20, 32, 25, 0.3);
}

.booking-section .section-title {
    color: var(--text-light);
}

.booking-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.booking-form-box {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border-radius: 2px;
}

.form-group {
    margin-bottom: 1.8rem;
}

.form-group label {
    display: block;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    margin-bottom: 0.6rem;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
}

.form-input {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.9rem 1.2rem;
    color: var(--text-light);
    font-size: 0.95rem;
    border-radius: 2px;
    outline: none;
    transition: var(--transition-smooth);
}

.form-input:focus {
    border-color: var(--accent-gold);
    background-color: rgba(255, 255, 255, 0.15);
}

select.form-input option {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.booking-results-box {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1rem 0;
}

.calculator-card {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 2px;
    padding: 2.5rem;
    border-left: 3px solid var(--accent-gold);
}

.calculator-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 0.8rem;
    letter-spacing: 0.1em;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    opacity: 0.9;
}

.calc-row.total {
    border-top: 1px dashed rgba(255, 255, 255, 0.2);
    padding-top: 1.2rem;
    margin-top: 1.2rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-gold);
    opacity: 1;
}

.btn-book-now {
    width: 100%;
    background-color: var(--accent-gold);
    color: var(--text-light);
    border: none;
    padding: 1.2rem;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    cursor: pointer;
    transition: var(--transition-smooth);
    border-radius: 2px;
    margin-top: 2rem;
}

.btn-book-now:hover {
    background-color: var(--accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(179, 142, 80, 0.5);
}

.btn-book-now:disabled {
    background-color: #555;
    color: #888;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    width: 90%;
    max-width: 550px;
    padding: 3.5rem;
    border-radius: 2px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    transform: scale(0.9);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid var(--accent-gold);
    text-align: center;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.modal-close:hover {
    color: var(--accent-gold);
}

.modal-icon {
    font-size: 3.5rem;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
}

.modal-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
}

.modal-summary {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 2px;
    margin-bottom: 2rem;
    text-align: left;
    font-size: 0.95rem;
}

.modal-summary p {
    margin-bottom: 0.5rem;
}

.modal-summary p:last-child {
    margin-bottom: 0;
}

.btn-modal-close {
    background-color: var(--accent-green);
    color: var(--text-light);
    border: none;
    padding: 0.9rem 2.5rem;
    font-family: var(--font-serif);
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-modal-close:hover {
    background-color: var(--accent-green-hover);
}

/* Footer */
footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding: 6rem 10% 4rem;
    border-top: 1px solid rgba(179, 142, 80, 0.2);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 5rem;
}

.footer-brand .logo {
    margin-bottom: 1.5rem;
}

.footer-brand p {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-bottom: 1.5rem;
}

.footer-contact-info {
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-contact-info p {
    margin-bottom: 0.5rem;
}

.footer-links h4 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    color: var(--accent-gold);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 0.8rem;
}

.footer-links ul li a {
    font-size: 0.9rem;
    opacity: 0.75;
}

.footer-links ul li a:hover {
    opacity: 1;
    color: var(--accent-gold);
    padding-left: 5px;
}

.footer-map-container {
    height: 180px;
    border: 1px solid rgba(179, 142, 80, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.footer-map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Animations Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

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

/* Responsive design */
@media (max-width: 1024px) {
    header {
        padding: 1.5rem 2rem;
    }
    header.scrolled {
        padding: 1rem 2rem;
    }
    section {
        padding: 6rem 5%;
    }
    .concept-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .concept-images {
        height: 380px;
    }
    .onsen-intro {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .grid-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .booking-section {
        padding: 3rem 2rem;
    }
    .booking-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem 1.5rem;
    }
    header.scrolled {
        padding: 0.8rem 1.5rem;
    }
    .logo .title {
        font-size: 1.3rem;
        letter-spacing: 0.15em;
    }
    .logo .subtitle {
        font-size: 0.6rem;
        letter-spacing: 0.2em;
    }
    .nav-toggle {
        display: flex;
    }
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--bg-dark);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        z-index: 1000;
        transition: var(--transition-smooth);
        padding: 2rem;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
    }
    nav.active {
        right: 0;
    }
    header.scrolled nav a {
        color: var(--text-light);
    }
    .hero {
        height: 65vh;
        justify-content: center;
        padding-right: 0;
    }
    .hero-content {
        flex-direction: row-reverse;
        justify-content: center;
        align-items: flex-start;
        gap: min(1.2rem, 3vw);
        width: 100%;
        margin-top: 80px;
    }
    .vertical-text h1 {
        font-size: clamp(1rem, 4vh, 1.8rem);
    }
    .vertical-text p {
        font-size: clamp(0.8rem, 2vh, 0.95rem);
        margin-top: clamp(0.8rem, 2vh, 1.5rem);
    }
    .onsen-features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}