:root {
    --garden-bg: #091015;
    --garden-panel: #101712;
    --garden-panel-light: rgba(255, 250, 240, 0.82);
    --garden-line: rgba(156, 203, 179, 0.2);
    --garden-text: #edf5ee;
    --garden-muted: #d3e0d5;
    --garden-accent: #9ccbb3;
    --garden-accent-strong: #d7f2df;
    --garden-shadow: none;
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: dark;
}

body {
    min-height: 100vh;
    margin: 0;
    padding: 1.2rem 1rem 2.5rem;
    color: var(--garden-text);
    font-family: "Yu Mincho", "Hiragino Mincho ProN", "Palatino Linotype", Georgia, serif;
    line-height: 1.85;
    text-align: center;
    background:
        linear-gradient(180deg, rgba(4, 8, 11, 0.28), rgba(4, 8, 11, 0.92)),
        radial-gradient(circle at top left, rgba(156, 203, 179, 0.14), transparent 28%),
        radial-gradient(circle at bottom right, rgba(214, 227, 164, 0.12), transparent 24%),
        url("../img/wallpaper.jpg") center / cover fixed;
}

.skip-link {
    position: fixed;
    z-index: 1000;
    top: 0.5rem;
    left: 0.5rem;
    min-height: 44px;
    padding: 0.65rem 0.9rem;
    transform: translateY(calc(-100% - 0.75rem));
    background: #edf5ee;
    color: #091015;
    border: 2px solid #9ccbb3;
    text-align: left;
}

.skip-link:focus {
    transform: translateY(0);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--garden-accent-strong);
    outline-offset: 3px;
}

.courtyard-page #show-japanese,
.courtyard-page #show-english,
.courtyard-page #content > li > a {
    min-height: 44px;
}

.courtyard-page[data-default-language="japanese"] .english-text,
.courtyard-page[data-default-language="english"] .japanese-text {
    display: none;
}

.courtyard-page #main-content > section:first-of-type h2 {
    max-width: 100%;
    margin-inline: auto;
    font-size: clamp(1.05rem, 5.2vw, 1.5rem);
    line-height: 1.35;
}

@media (prefers-reduced-motion: reduce) {
    .courtyard-page *,
    .courtyard-page *::before,
    .courtyard-page *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.unique-background001 {
    color: #1c1b19;
    background:
        linear-gradient(180deg, rgba(255, 248, 236, 0.4), rgba(255, 248, 236, 0.88)),
        url("../img/washi_001.jpg") center / cover fixed;
}

a {
    color: var(--garden-accent-strong);
    text-decoration: none;
}

a:hover {
    color: #ffffff;
}

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

#container,
#unique-container001,
#vertical-unique-container001,
.login-container {
    width: min(900px, 100%);
    margin: 0 auto;
    padding: 1.1rem;
    border-radius: 2px;
    border: 1px solid var(--garden-line);
    box-shadow: var(--garden-shadow);
    backdrop-filter: none;
}

#container,
.login-container {
    background: var(--garden-panel);
}

#unique-container001,
#vertical-unique-container001 {
    background: var(--garden-panel-light);
}

#vertical-unique-container001,
.unique-background001 #unique-container001,
.unique-background001 #vertical-unique-container001 {
    color: #1c1b19;
}

header {
    margin-bottom: 1.2rem;
}

header h1 {
    margin: 0 0 1rem;
    color: var(--garden-accent-strong);
    font-size: clamp(1.7rem, 4vw, 2.7rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

header img {
    margin: 0 auto;
    width: clamp(68px, 12vw, 84px);
    padding: 0.25rem;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

nav ul,
#content {
    list-style: none;
    margin: 0;
    padding: 0;
}

#content {
    display: grid;
    gap: 0.85rem;
}

#content .work-in-progress > details > summary {
    min-height: 44px;
    color: var(--garden-accent-strong);
    cursor: pointer;
    list-style-position: inside;
    padding: 0.5rem 1rem;
    text-align: left;
}

#content .work-in-progress > details > summary:focus-visible {
    outline: 2px solid var(--garden-accent-strong);
    outline-offset: 3px;
}

#content .work-in-progress-list {
    list-style: none;
    margin: 0;
    padding: 0 0 0 1rem;
}

#content .work-status {
    font-size: 0.9em;
    opacity: 0.78;
}

#content a,
#content .disabled-link {
    display: block;
    padding: 1rem 1.1rem;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--garden-accent-strong);
    text-align: left;
    line-height: 1.7;
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

#content .disabled-link {
    color: rgba(178, 205, 188, 0.48);
}

#content a:hover {
    transform: none;
    border-color: rgba(156, 203, 179, 0.36);
    background: rgba(255, 255, 255, 0.08);
}

button,
input,
textarea {
    font: inherit;
}

button {
    padding: 0.8rem 1.2rem;
    border-radius: 2px;
    border: 1px solid rgba(156, 203, 179, 0.28);
    background: rgba(156, 203, 179, 0.14);
    color: var(--garden-text);
    cursor: pointer;
    transition: transform 180ms ease, border-color 180ms ease;
}

button:hover {
    transform: none;
    border-color: rgba(156, 203, 179, 0.5);
}

p {
    width: min(680px, 100%);
    margin: 0 auto 1rem;
    text-align: left;
    color: var(--garden-muted);
}

.unique-background001 p,
#unique-container001 p,
#vertical-unique-container001 p {
    color: #24211d;
}

.indent-text {
    text-indent: 1em;
}

.heading {
    color: var(--garden-accent-strong);
    letter-spacing: 0.06em;
}

.unique-background001 .heading,
#unique-container001 .heading,
#vertical-unique-container001 .heading {
    color: #5c4330;
}

.spacer {
    height: 1rem;
}

.vertical-text {
    writing-mode: vertical-rl;
    text-orientation: upright;
    overflow-x: auto;
    white-space: normal;
    padding: 1rem;
    line-height: 1.8em;
    min-height: calc(1.8em * 24);
}

.vertical-spacer {
    width: 1rem;
}

.japanese-text {
    font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
}

.english-text {
    font-family: Georgia, "Palatino Linotype", serif;
}

.fade-in-text,
.fade-in-image {
    opacity: 0;
    transition: opacity 900ms ease-in-out;
}

.fade-in-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    max-width: 860px;
    margin: 0 auto;
}

.update-notice {
    width: min(900px, 100%);
    margin: 1rem auto 0;
    padding: 1rem 1.2rem;
    border-radius: 2px;
    background: rgba(8, 15, 20, 0.72);
    border: 1px solid rgba(156, 203, 179, 0.16);
    color: var(--garden-muted);
}

.message {
    text-align: center;
    color: var(--garden-accent-strong);
    letter-spacing: 0.08em;
}

.error-message {
    color: #ffc8b0;
    text-align: center;
}

.login-container form {
    display: grid;
    gap: 0.9rem;
    width: min(420px, 100%);
    margin: 1.5rem auto 0;
}

.login-container input[type="password"],
.login-container input[type="text"] {
    width: 100%;
    padding: 0.85rem 1rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: var(--garden-text);
}

hr {
    border: 0;
    border-top: 1px solid rgba(156, 203, 179, 0.22);
    margin: 1.5rem auto;
    width: min(860px, 100%);
}

footer {
    width: min(960px, 100%);
    margin: 1.2rem auto 0;
    padding: 0 1rem 1rem;
}

.footer-content a {
    color: var(--garden-accent-strong);
}

.garden-subpage .footer-content a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0.5rem;
}

.courtyard-page .footer-content a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0.5rem;
}

@media (max-width: 720px) {
    body {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    #container,
    #unique-container001,
    #vertical-unique-container001,
    .login-container {
        margin-left: -0.75rem;
        margin-right: -0.75rem;
        width: calc(100% + 1.5rem);
        padding: 1rem;
        border-left: 0;
        border-right: 0;
        border-radius: 0;
    }

    header h1 {
        letter-spacing: 0.1em;
    }
}

/* Keep the garden's atmosphere, remove the dashboard container. */
body { padding-top: 2rem; }
#container,
.login-container {
    width: min(860px, 100%);
    padding: 0;
    border: 0;
    background: rgba(6, 12, 9, 0.9);
}
header { padding: 2rem 2rem 1rem; }
header img { border: 0; background: transparent; }
#content { display: block; padding: 0 2rem; border-top: 1px solid var(--garden-line); }
#content li { border-bottom: 1px solid var(--garden-line); }
#content a,
#content .disabled-link {
    padding: 0.95rem 0;
    border: 0;
    background: transparent;
}
#content a:hover { background: transparent; padding-left: 0.4rem; }
button { border-radius: 0; background: transparent; }
.update-notice { border-radius: 0; border-left: 0; border-right: 0; background: transparent; }
hr { margin: 2rem auto; }

@media (max-width: 720px) {
    body { padding: 0; }
    #container,
    .login-container { margin: 0; width: 100%; }
    header { padding: 1.5rem 1rem 0.8rem; }
    #content { padding: 0 1rem; }
}

/* The Secret Door keeps the garden's existing materials and gives the form a clear order. */
.secret-door-page {
    min-height: 100vh;
    padding: clamp(1rem, 4vw, 3rem);
    text-align: left;
    background: #091015 url("../img/wallpaper.jpg") center / cover fixed;
}

.secret-door-shell {
    width: min(62rem, 100%);
    margin: 0 auto;
    border-block: 1px solid var(--garden-line);
    background: #091015;
}

.secret-door-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin: 0;
    padding: clamp(1.25rem, 4vw, 2.5rem);
    border-bottom: 1px solid var(--garden-line);
}

.secret-door-kicker {
    margin: 0 0 0.5rem;
    color: var(--garden-muted);
    font-family: system-ui, sans-serif;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
}

.secret-door-header h1 {
    margin: 0;
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    letter-spacing: 0.03em;
    text-transform: none;
}

.secret-door-header img {
    flex: none;
    width: clamp(3rem, 12vw, 4.75rem);
    padding: 0;
    border: 0;
    background: transparent;
}

.secret-door-main {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.85fr);
    align-items: center;
    gap: clamp(1.25rem, 4vw, 3rem);
    padding: clamp(1.25rem, 4vw, 3rem);
}

.secret-door-figure {
    margin: 0;
}

.secret-door-figure img {
    width: 100%;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    border: 1px solid var(--garden-line);
}

.secret-door-page .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.secret-door-entry .message {
    margin: 0 0 1rem;
    text-align: left;
    font-size: clamp(1rem, 2.2vw, 1.2rem);
    line-height: 1.7;
}

.secret-door-instruction {
    margin: 0;
    color: var(--garden-muted);
}

.secret-door-entry form {
    display: grid;
    gap: 0.65rem;
    margin: 1.5rem 0 0;
}

.secret-door-entry label {
    font-weight: 600;
}

.secret-door-entry input[type="password"] {
    width: 100%;
    min-height: 3rem;
    padding: 0.65rem 0.8rem;
    border: 1px solid rgba(156, 203, 179, 0.55);
    border-radius: 0;
    background: #0b1116;
    color: var(--garden-text);
}

.secret-door-entry button {
    justify-self: start;
    min-width: 8rem;
    min-height: 3rem;
    margin-top: 0.25rem;
    border: 1px solid var(--garden-accent);
    border-radius: 0;
    background: var(--garden-accent);
    color: #091015;
    font-weight: 700;
    transition: none;
}

.secret-door-entry button:hover {
    background: var(--garden-accent-strong);
    border-color: var(--garden-accent-strong);
}

.secret-door-entry .error-message {
    margin: 1rem 0 0;
    padding: 0.6rem 0.85rem;
    border-left: 3px solid #ffc8b0;
    text-align: left;
}

.secret-door-footer {
    margin: 0;
    padding: 0 clamp(1.25rem, 4vw, 3rem) 1rem;
    font-family: system-ui, sans-serif;
}

.secret-door-footer a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0.5rem 0;
}

@media (max-width: 680px) {
    .secret-door-page {
        padding: 0.5rem;
        background-attachment: scroll;
    }

    .secret-door-main {
        grid-template-columns: minmax(0, 1fr);
    }

    .secret-door-figure img {
        max-height: 15rem;
    }
}