/* =========
  Mermaid Castle (Cute / Pastel Aqua)
========= */
:root {
    --bg1: #061a33;
    --bg2: #0a4f86;

    --aqua: #76f2ff;
    --sky: #a8dcff;
    --mint: #b8ffe7;
    --pink: #ffc6f2;
    --pearl: #fbfeff;

    --text: #f2fbff;
    --muted: rgba(242, 251, 255, .78);

    --glass: rgba(255, 255, 255, .10);
    --glass2: rgba(255, 255, 255, .16);
    --line: rgba(168, 220, 255, .30);

    --shadow: 0 18px 60px rgba(0, 0, 0, .32);
    --radius: 20px;
    --radius-lg: 28px;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    background:
        radial-gradient(1200px 900px at 18% 12%, rgba(118, 242, 255, .22), transparent 60%),
        radial-gradient(980px 760px at 82% 16%, rgba(168, 220, 255, .20), transparent 62%),
        radial-gradient(900px 700px at 70% 88%, rgba(255, 198, 242, .10), transparent 62%),
        radial-gradient(740px 580px at 25% 88%, rgba(184, 255, 231, .14), transparent 62%),
        linear-gradient(180deg, var(--bg1), var(--bg2));
}

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

.container {
    width: min(1120px, 92vw);
    margin-inline: auto;
}

.section {
    padding: 86px 0;
    position: relative;
}

.section.alt {
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .03));
    border-top: 1px solid rgba(255, 255, 255, .08);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.section-head {
    margin-bottom: 26px;
}

.section-title {
    margin: 0;
    font-size: clamp(22px, 2.5vw, 34px);
    letter-spacing: .08em;
}

.section-sub {
    margin: 10px 0 0;
    color: var(--muted);
}

/* =========
  Background ornaments
========= */
.bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
}

.bubble {
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, .92), rgba(255, 255, 255, .10) 55%, rgba(118, 242, 255, .12) 100%);
    opacity: .7;
    filter: blur(.15px);
    animation: float 11s linear infinite;
}

.b1 {
    left: 7%;
    bottom: -80px;
    animation-duration: 14s;
    transform: scale(1.2);
}

.b2 {
    left: 16%;
    bottom: -120px;
    animation-duration: 18s;
    transform: scale(0.9);
}

.b3 {
    left: 41%;
    bottom: -90px;
    animation-duration: 15s;
    transform: scale(1.6);
}

.b4 {
    left: 62%;
    bottom: -130px;
    animation-duration: 20s;
    transform: scale(1.3);
}

.b5 {
    left: 79%;
    bottom: -110px;
    animation-duration: 16s;
    transform: scale(1.0);
}

.b6 {
    left: 92%;
    bottom: -150px;
    animation-duration: 22s;
    transform: scale(1.8);
}

@keyframes float {
    0% {
        translate: 0 0;
        opacity: .0;
    }

    10% {
        opacity: .75;
    }

    100% {
        translate: 0 -110vh;
        opacity: .0;
    }
}

.glow {
    position: absolute;
    width: 560px;
    height: 560px;
    border-radius: 50%;
    filter: blur(50px);
    opacity: .38;
}

.g1 {
    left: -160px;
    top: 10%;
    background: radial-gradient(circle, rgba(118, 242, 255, .55), transparent 62%);
}

.g2 {
    right: -200px;
    top: 55%;
    background: radial-gradient(circle, rgba(255, 198, 242, .22), transparent 62%);
}

/* =========
  Header / Nav
========= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: linear-gradient(180deg, rgba(6, 26, 51, .72), rgba(6, 26, 51, .30));
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 220px;
}

.logo-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, .26), rgba(255, 255, 255, .06));
    border: 1px solid rgba(255, 255, 255, .14);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .18);
}

.logo-top {
    display: block;
    font-weight: 800;
    letter-spacing: .06em;
}

.logo-sub {
    display: block;
    font-size: 12px;
    color: var(--muted);
    letter-spacing: .14em;
}

.nav {
    margin-left: auto;
    display: flex;
    gap: 14px;
    align-items: center;
}

.nav a {
    font-size: 14px;
    color: rgba(242, 251, 255, .92);
    padding: 8px 10px;
    border-radius: 14px;
    border: 1px solid transparent;
}

.nav a:hover {
    border-color: rgba(168, 220, 255, .32);
    background: rgba(255, 255, 255, .06);
}

.nav-toggle {
    display: none;
    margin-left: auto;
    width: 46px;
    height: 46px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .08);
    backdrop-filter: blur(12px);
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 18px;
    background: rgba(242, 251, 255, .95);
    margin: 5px auto;
    border-radius: 99px;
}

/* =========
  Buttons / Cards
========= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .18);
    background: rgba(255, 255, 255, .08);
    color: var(--text);
    font-weight: 750;
    letter-spacing: .02em;
    box-shadow: 0 14px 36px rgba(0, 0, 0, .18);
    transition: transform .15s ease, background .15s ease, border-color .15s ease, filter .15s ease;
}

.btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, .11);
    border-color: rgba(168, 220, 255, .40);
    filter: brightness(1.04);
}

.btn-primary {
    border-color: rgba(118, 242, 255, .45);
    background: linear-gradient(135deg, rgba(118, 242, 255, .26), rgba(255, 198, 242, .18));
}

.btn-ghost {
    background: transparent;
}

.glass-card {
    background:
        radial-gradient(700px 320px at 20% 10%, rgba(118, 242, 255, .16), transparent 62%),
        radial-gradient(680px 320px at 80% 20%, rgba(255, 198, 242, .10), transparent 62%),
        linear-gradient(180deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .06));
    border: 1px solid rgba(168, 220, 255, .26);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
}

/* =========
  Hero
========= */
.hero {
    padding: 92px 0 56px;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 28px;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(168, 220, 255, .30);
    background: rgba(255, 255, 255, .07);
    color: rgba(242, 251, 255, .92);
    font-size: 13px;
    letter-spacing: .10em;
    margin: 0 0 12px;
}

.hero-title {
    margin: 0;
    font-size: clamp(32px, 4.2vw, 56px);
    line-height: 1.08;
    letter-spacing: .05em;
}

.accent {
    background: linear-gradient(90deg, var(--aqua), var(--mint), var(--pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-lead {
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 15.5px;
}

.hero-cta {
    margin-top: 22px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-meta {
    margin-top: 22px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.meta-card {
    padding: 12px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .12);
}

.meta-label {
    display: block;
    font-size: 12px;
    color: rgba(242, 251, 255, .74);
    letter-spacing: .10em;
}

.meta-value {
    display: block;
    margin-top: 2px;
    font-weight: 850;
}

.hero-visual {
    display: flex;
    justify-content: flex-end;
}

.castle-card {
    width: min(430px, 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(168, 220, 255, .28);
    background:
        radial-gradient(600px 340px at 18% 10%, rgba(118, 242, 255, .20), transparent 60%),
        radial-gradient(520px 300px at 82% 18%, rgba(255, 198, 242, .12), transparent 62%),
        linear-gradient(180deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .06));
    box-shadow: var(--shadow);
    padding: 16px;
    position: relative;
    overflow: hidden;
}

.castle-card::after {
    content: "";
    position: absolute;
    inset: -2px;
    background:
        radial-gradient(circle at 30% 10%, rgba(255, 255, 255, .20), transparent 42%),
        radial-gradient(circle at 70% 80%, rgba(255, 198, 242, .12), transparent 48%);
    pointer-events: none;
}

.castle-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pill {
    font-size: 12px;
    padding: 7px 10px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .08);
    color: rgba(242, 251, 255, .90);
}

.sparkle {
    font-size: 18px;
    opacity: .9;
}

.castle-body {
    margin-top: 18px;
    display: grid;
    gap: 14px;
    place-items: center;
    padding: 26px 0 18px;
}

.castle-orb {
    width: 170px;
    height: 170px;
    border-radius: 50%;
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, .44), rgba(255, 255, 255, .07) 42%, rgba(118, 242, 255, .18) 70%),
        radial-gradient(circle at 70% 80%, rgba(255, 198, 242, .14), transparent 55%);
    border: 1px solid rgba(255, 255, 255, .16);
    box-shadow: 0 26px 74px rgba(0, 0, 0, .22);
}

.castle-text {
    margin: 0;
    text-align: center;
    font-weight: 900;
    letter-spacing: .06em;
}

.castle-text small {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    font-weight: 650;
    color: rgba(242, 251, 255, .78);
}

.castle-bottom {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    color: rgba(242, 251, 255, .76);
    font-size: 12px;
}

/* =========
  Grids / Menu
========= */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.menu-card {
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(168, 220, 255, .24);
    padding: 16px;
}

.menu-top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.menu-card h3 {
    margin: 0;
    font-size: 18px;
}

.price {
    font-weight: 900;
    letter-spacing: .02em;
    color: rgba(184, 255, 231, .98);
}

.chips {
    margin-top: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.chip {
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .07);
    color: rgba(242, 251, 255, .82);
}

/* =========
  System / Access
========= */
.system {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-top: 12px;
}

.list {
    list-style: none;
    padding: 0;
    margin: 10px 0 0;
}

.list li {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

.note {
    margin: 12px 0 0;
    color: rgba(242, 251, 255, .72);
    font-size: 12.5px;
}

.access {
    display: grid;
    grid-template-columns: .95fr 1.05fr;
    gap: 14px;
    align-items: stretch;
}

.dl {
    margin: 12px 0 14px;
}

.dl>div {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

.dl dt {
    color: rgba(242, 251, 255, .78);
    font-weight: 800;
}

.dl dd {
    margin: 0;
}

.map {
    padding: 0;
    overflow: hidden;
}

.map-inner {
    height: 100%;
    min-height: 240px;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 18px;
    background:
        radial-gradient(450px 280px at 20% 20%, rgba(118, 242, 255, .18), transparent 60%),
        radial-gradient(420px 260px at 80% 70%, rgba(255, 198, 242, .12), transparent 62%),
        rgba(255, 255, 255, .05);
}

.map-inner p {
    margin: 0;
    font-weight: 900;
    letter-spacing: .06em;
}

.map-inner small {
    color: rgba(242, 251, 255, .76);
}

/* =========
  CONTACT (uses old reserve/form layout)
========= */
.reserve {
    padding-bottom: 110px;
}

.reserve-inner {
    display: grid;
    grid-template-columns: .95fr 1.05fr;
    gap: 18px;
    align-items: start;
}

.form label {
    display: grid;
    gap: 8px;
    font-size: 13px;
    color: rgba(242, 251, 255, .88);
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 12px;
    border-radius: 16px;
    border: 1px solid rgba(168, 220, 255, .26);
    background: rgba(6, 26, 51, .40);
    color: var(--text);
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(118, 242, 255, .62);
    box-shadow: 0 0 0 4px rgba(118, 242, 255, .16);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.form .btn {
    margin-top: 12px;
    width: 100%;
}

/* =========
  Footer
========= */
.footer {
    padding: 26px 0;
    border-top: 1px solid rgba(255, 255, 255, .10);
    background: rgba(6, 26, 51, .40);
    backdrop-filter: blur(12px);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    color: rgba(242, 251, 255, .76);
}

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

.footer a:hover {
    color: rgba(255, 198, 242, .92);
}

/* =========
  CAST section (Cute cards)
========= */
.cast-grid {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.cast-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(168, 220, 255, .28);
    background:
        radial-gradient(520px 260px at 20% 10%, rgba(118, 242, 255, .14), transparent 62%),
        radial-gradient(520px 260px at 80% 20%, rgba(255, 198, 242, .10), transparent 62%),
        linear-gradient(180deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .06));
    box-shadow: var(--shadow);
    transform: translateZ(0);
}

.cast-card::after {
    content: "";
    position: absolute;
    inset: -2px;
    background: radial-gradient(circle at 30% 10%, rgba(255, 255, 255, .20), transparent 42%);
    pointer-events: none;
}

.cast-badges {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    gap: 8px;
    z-index: 2;
    flex-wrap: wrap;
    max-width: calc(100% - 24px);
}

.cast-badge {
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .16);
    background: rgba(6, 26, 51, .45);
    color: rgba(242, 251, 255, .92);
    backdrop-filter: blur(10px);
    white-space: nowrap;
}

.cast-badge.on {
    border-color: rgba(118, 242, 255, .50);
    background: linear-gradient(135deg, rgba(118, 242, 255, .24), rgba(184, 255, 231, .14));
}

.cast-badge.off {
    border-color: rgba(255, 255, 255, .22);
    background: rgba(255, 255, 255, .10);
    color: rgba(242, 251, 255, .78);
}

.cast-badge.new {
    border-color: rgba(255, 198, 242, .55);
    background: linear-gradient(135deg, rgba(255, 198, 242, .20), rgba(118, 242, 255, .12));
}

.cast-photo {
    position: relative;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

.cast-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: saturate(1.05) contrast(1.03);
    transform: scale(1.02);
}

.cast-photo::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(520px 260px at 30% 10%, rgba(118, 242, 255, .22), transparent 55%),
        radial-gradient(520px 260px at 80% 20%, rgba(255, 198, 242, .14), transparent 60%),
        linear-gradient(180deg, rgba(0, 0, 0, .10), rgba(0, 0, 0, .28));
    pointer-events: none;
}

.cast-body {
    padding: 14px 14px 16px;
}

.cast-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.cast-name {
    margin: 0;
    font-size: 18px;
    font-weight: 900;
    letter-spacing: .06em;
}

.cast-ruby {
    font-size: 12px;
    color: rgba(242, 251, 255, .70);
    letter-spacing: .12em;
}

.cast-tagline {
    margin: 8px 0 10px;
    color: rgba(242, 251, 255, .84);
    font-size: 13px;
}

.cast-meta {
    margin: 0;
    display: grid;
    gap: 6px;
    font-size: 12.5px;
    color: rgba(242, 251, 255, .78);
}

.cast-meta>div {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .10);
}

.cast-meta dt {
    font-weight: 800;
    color: rgba(242, 251, 255, .86);
}

.cast-meta dd {
    margin: 0;
    text-align: right;
}

.cast-actions {
    margin-top: 12px;
    display: flex;
    gap: 10px;
}

.btn-mini {
    padding: 10px 12px;
    font-size: 13px;
    width: 100%;
}

.cast-more {
    margin-top: 18px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* =========
  Responsive
========= */
@media (max-width: 1100px) {
    .cast-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 980px) {
    .hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        justify-content: flex-start;
    }

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

    .reserve-inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .cast-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 780px) {
    .nav {
        display: none;
        position: absolute;
        top: 64px;
        right: 4vw;
        left: 4vw;
        flex-direction: column;
        gap: 8px;
        padding: 12px;
        border-radius: 18px;
        background: rgba(6, 26, 51, .88);
        border: 1px solid rgba(168, 220, 255, .22);
        backdrop-filter: blur(14px);
    }

    .nav.is-open {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .header-inner {
        position: relative;
    }

    .hero-meta {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 520px) {
    .cast-grid {
        grid-template-columns: 1fr;
    }
}

/* castle-card slideshow */
.castle-card.js-slideshow {
    position: relative;
    overflow: hidden;
}

.castle-card .slideshow-main {
    position: relative;
    border-radius: 18px;
}

.castle-card .slide-viewport {
    overflow: hidden;
    border-radius: 18px;
}

.castle-card .slide-track {
    display: flex;
    width: 100%;
    transform: translateX(0%);
    transition: transform 450ms ease;
}

.castle-card .slide {
    width: 100%;
    flex: 0 0 100%;
    display: block;
    height: auto;
    border-radius: 18px;
}

/* nav buttons */
.castle-card .slide-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    border: 1px solid rgba(118, 242, 255, .45);
    background: rgba(6, 26, 51, .55);
    color: #f2fbff;
    font-size: 24px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(6px);
}

.castle-card .slide-nav.prev {
    left: 10px;
}

.castle-card .slide-nav.next {
    right: 10px;
}

.castle-card .slide-nav:hover {
    background: rgba(6, 26, 51, .75);
}

/* thumbs */
.castle-card .slideshow-thumbs {
    margin-top: 12px;
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.castle-card .thumb {
    flex: 0 0 auto;
    width: 72px;
    height: 54px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, .18);
    background: rgba(255, 255, 255, .08);
    padding: 0;
    cursor: pointer;
    overflow: hidden;
}

.castle-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.castle-card .thumb.is-active {
    outline: 2px solid rgba(118, 242, 255, .75);
    outline-offset: 2px;
}

/* スマホで矢印が邪魔なら少し小さく */
@media (max-width: 640px) {
    .castle-card .slide-nav {
        width: 36px;
        height: 36px;
        font-size: 22px;
    }

    .castle-card .thumb {
        width: 64px;
        height: 48px;
    }
}