/* Shared appearance: page structure stays in each page's stylesheet. */
:root, html[data-theme="light"] {
    color-scheme: light;
    --yakumo-bg: #f5f5f7;
    --yakumo-surface: #ffffff;
    --yakumo-raised: #ffffff;
    --yakumo-soft: #ededf0;
    --yakumo-text: #1d1d1f;
    --yakumo-muted: #616166;
    --yakumo-border: #d2d2d7;
    --yakumo-link: #0066cc;
    --yakumo-primary: #0066cc;
    --yakumo-on-primary: #ffffff;
    --yakumo-danger: #a51d26;
    --yakumo-success: #17683a;
    --yakumo-shadow: 0 8px 30px rgb(0 0 0 / 5%);
    --bg: var(--yakumo-bg);
    --panel: var(--yakumo-surface);
    --panel-2: var(--yakumo-soft);
    --card: var(--yakumo-surface);
    --text: var(--yakumo-text);
    --muted: var(--yakumo-muted);
    --border: var(--yakumo-border);
    --head: var(--yakumo-soft);
    --header: var(--yakumo-soft);
    --row: var(--yakumo-surface);
    --input-bg: var(--yakumo-surface);
    --btn-bg: var(--yakumo-surface);
    --btn-text: var(--yakumo-text);
    --btn-border: var(--yakumo-border);
    --accent: var(--yakumo-link);
    --time: var(--yakumo-muted);
    --danger: var(--yakumo-danger);
    --join: var(--yakumo-link);
    --leave: var(--yakumo-danger);
    --online: var(--yakumo-success);
}
html[data-theme="dark"] {
    color-scheme: dark;
    --yakumo-bg: #101012;
    --yakumo-surface: #1c1c1e;
    --yakumo-raised: #28282b;
    --yakumo-soft: #303034;
    --yakumo-text: #f5f5f7;
    --yakumo-muted: #b5b5bd;
    --yakumo-border: #505057;
    --yakumo-link: #80baff;
    --yakumo-primary: #0066cc;
    --yakumo-on-primary: #ffffff;
    --yakumo-danger: #ff9ca4;
    --yakumo-success: #80dba3;
    --yakumo-shadow: 0 8px 30px rgb(0 0 0 / 16%);
    --bg: var(--yakumo-bg);
    --panel: var(--yakumo-surface);
    --panel-2: var(--yakumo-soft);
    --card: var(--yakumo-surface);
    --text: var(--yakumo-text);
    --muted: var(--yakumo-muted);
    --border: var(--yakumo-border);
    --head: var(--yakumo-soft);
    --header: var(--yakumo-soft);
    --row: var(--yakumo-surface);
    --input-bg: var(--yakumo-surface);
    --btn-bg: var(--yakumo-surface);
    --btn-text: var(--yakumo-text);
    --btn-border: var(--yakumo-border);
    --accent: var(--yakumo-link);
    --time: var(--yakumo-muted);
    --danger: var(--yakumo-danger);
    --join: var(--yakumo-link);
    --leave: var(--yakumo-danger);
    --online: var(--yakumo-success);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
html body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Yu Gothic UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    line-height: 1.65;
    color: var(--yakumo-text) !important;
    background: var(--yakumo-bg) !important;
    padding-bottom: 88px;
}
html body :is(.container, main, .card, .panel, .modal-content, .chat-container, .input-area, .news-item, .announcement, .update-item, .intrusion-card) {
    color: var(--yakumo-text) !important;
    background: var(--yakumo-surface) !important;
    border-color: var(--yakumo-border) !important;
    border-radius: 18px;
    box-shadow: var(--yakumo-shadow);
}
html body :is(.card, .panel) { border-width: 1px; padding: clamp(16px, 3vw, 28px); }
html body :is(h1, h2, h3, h4, .title, .h, #message, #wallet) {
    color: var(--yakumo-text) !important;
    letter-spacing: -.025em;
    line-height: 1.35;
}
html body :is(.muted, .small, .sub, .note, .date, .timestamp, .time, .theme-label, .summary-header p) {
    color: var(--yakumo-muted) !important;
    opacity: 1;
}
html body :is(p, label, legend) { color: inherit; }
html body a { color: var(--yakumo-link); text-underline-offset: .22em; }
html body a:hover { text-decoration: underline; }
html body :is(.navbar, .app-header, footer) {
    color: var(--yakumo-text) !important;
    background: var(--yakumo-surface) !important;
    border-bottom: 1px solid var(--yakumo-border);
    box-shadow: 0 1px 8px rgb(0 0 0 / 4%);
}
html body :is(.logo, .brand, .nav-links a) { color: var(--yakumo-text) !important; }
.nav-container { width: min(94%, 1440px); min-height: 60px; gap: 16px; margin-inline: auto; }
.nav-links { align-items: center; gap: 4px; }
.nav-links a { display: block; padding: 10px 12px; border-radius: 10px; text-decoration: none; }
html body .nav-links a:hover { background: var(--yakumo-soft); text-decoration: none; }
html body :is(button, .btn, input[type="submit"], input[type="button"]) {
    font: inherit;
    font-weight: 500;
    min-height: 44px;
    padding: 10px 18px;
    color: var(--yakumo-text) !important;
    background: var(--yakumo-raised) !important;
    border: 1px solid var(--yakumo-border) !important;
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
}
html body :is(button, .btn):hover { background: var(--yakumo-soft) !important; text-decoration: none; }
html body :is(button[type="submit"], .btn.primary, #startBtn, #estimateBtn, .theme-btn.active) {
    color: var(--yakumo-on-primary) !important;
    background: var(--yakumo-primary) !important;
    border-color: var(--yakumo-primary) !important;
}
html body :is(button[type="submit"], .btn.primary, #startBtn, #estimateBtn):hover { background: #0055aa !important; }
html body :is(button, input, select, textarea):disabled { opacity: .55; cursor: not-allowed; }
html body :is(input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="hidden"]), select, textarea) {
    font: inherit;
    color: var(--yakumo-text) !important;
    background: var(--yakumo-surface) !important;
    border: 1px solid var(--yakumo-border) !important;
    border-radius: 10px;
    padding: 10px 12px;
    max-width: 100%;
    min-height: 44px;
}
html body ::placeholder { color: var(--yakumo-muted); opacity: 1; }
html body input:read-only { background: var(--yakumo-soft) !important; }
html body :is(table, tbody, tr, td) { color: var(--yakumo-text) !important; background: var(--yakumo-surface) !important; }
html body :is(th, td) { border-color: var(--yakumo-border) !important; padding: 12px 14px; }
html body th { color: var(--yakumo-text) !important; background: var(--yakumo-soft) !important; font-weight: 600; }
html body tr:hover td { background: var(--yakumo-soft) !important; }
html body :is(.summary-header, .status-bar, .statusbar, .topbar, .book, .clock-container) {
    color: var(--yakumo-text) !important;
    background: var(--yakumo-surface) !important;
    border-color: var(--yakumo-border) !important;
}
html body .self { background: var(--yakumo-soft) !important; color: var(--yakumo-text) !important; }
html body .other { background: var(--yakumo-surface) !important; color: var(--yakumo-text) !important; border: 1px solid var(--yakumo-border); }
html body :is(.error, .danger, .sell, .leave) { color: var(--yakumo-danger) !important; }
html body :is(.success, .buy, .join, .online) { color: var(--yakumo-success) !important; }
html body .error { background: var(--yakumo-surface) !important; border-color: var(--yakumo-danger) !important; }
html body .yakumo-theme-toggle {
    position: fixed;
    inset: auto 20px 20px auto;
    z-index: 1200;
    width: auto;
    margin: 0;
    padding: 12px 18px;
    border-radius: 999px;
    color: var(--yakumo-text) !important;
    background: var(--yakumo-raised) !important;
    box-shadow: 0 4px 20px rgb(0 0 0 / 14%);
    font-size: 14px;
    white-space: nowrap;
}
:focus-visible { outline: 3px solid var(--yakumo-link) !important; outline-offset: 3px; }
button, a, input, select, textarea { touch-action: manipulation; }
img, video, canvas { max-width: 100%; }
@media (max-width: 700px) {
    html body { overflow-wrap: anywhere; }
    html body :is(input, select, textarea) { font-size: 16px !important; }
    .nav-container { flex-wrap: wrap; }
    html body .nav-links {
        background: var(--yakumo-surface) !important;
        border-color: var(--yakumo-border);
    }
    .navbar .nav-links {
        display: none;
        position: absolute;
        top: 100%; left: 0; width: 100%;
        max-height: calc(100dvh - 80px);
        overflow-y: auto;
        padding: 12px 4%;
        flex-direction: column;
        align-items: stretch;
    }
    .navbar .nav-links.active, .navbar .nav-links.show { display: flex; }
    html body .yakumo-theme-toggle { right: 12px; bottom: 12px; }
    html body .card { padding: 16px; }
    /* Keep form tables intact; make long data tables scroll in their wrapper. */
    .table-wrap, .table-container { overflow-x: auto; }
    html body table:not(:has(input, textarea, select)) { display: block; max-width: 100%; overflow-x: auto; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media print {
    html body { background: white !important; color: black !important; padding-bottom: 0; }
    .yakumo-theme-toggle, .theme-controls, .theme-box { display: none !important; }
}
@media (max-width: 560px) {
    /* Form fields use the full screen width on phones. */
    html body table:has(input, textarea, select),
    html body table:has(input, textarea, select) :is(tbody, tr, td) { display: block; width: 100%; height: auto; }
    html body table:has(input, textarea, select) thead,
    html body table:has(input, textarea, select) tr:has(th) { display: none; }
    html body table:has(input, textarea, select) td { border: 0; }
    html body table:has(input, textarea, select) td:first-child { padding-bottom: 4px; font-weight: 600; }
    html body table:has(input, textarea, select) td:last-child { padding-top: 4px; padding-bottom: 20px; }
    html body table:has(input, textarea, select) :is(input, textarea, select) { width: 100%; }
    html body table:has(input, textarea, select) textarea { min-height: 120px; }
    html body .title { font-size: clamp(22px, 6vw, 30px); }
}
html body [style*="color:red"], html body [style*="color: red"] { color: var(--yakumo-danger) !important; }
/* Legacy panels and navigation also receive paired foreground/background colors. */
html body { --sub: var(--yakumo-muted); --hover: var(--yakumo-soft); }
html body :is(.box, .table-wrap, .notice) {
    background: var(--yakumo-surface) !important;
    color: var(--yakumo-text) !important;
    border-color: var(--yakumo-border) !important;
    border-radius: 16px;
}
html body :is(.navbar a, .caption) { color: var(--yakumo-text) !important; }
html body .navbar ul { background: var(--yakumo-surface) !important; }
html body .menu-toggle span { background: var(--yakumo-text) !important; }
html body .container > ul > li > a {
    background: var(--yakumo-soft) !important;
    color: var(--yakumo-text) !important;
    box-shadow: none;
}
html body :is(.meta, .empty, .label, .title-wrap p) { color: var(--yakumo-muted) !important; }
/* Navigation: preserve full words and collapse before links become crowded. */
html body .yakumo-nav { padding-block: 8px; }
html body .yakumo-nav .nav-container {
    width: calc(100% - 48px); max-width: 1800px; min-height: 48px;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: nowrap; gap: 24px;
}
html body .yakumo-nav .logo { flex: 0 0 auto; white-space: nowrap; font-size: 20px; letter-spacing: -.02em; }
html body .yakumo-nav .nav-links {
    display: flex; position: static; width: auto; max-height: none;
    flex-direction: row; flex-wrap: nowrap; align-items: center;
    gap: 2px; padding: 0; margin: 0; list-style: none;
}
html body .yakumo-nav .nav-links li { flex: 0 0 auto; padding: 0; margin: 0; }
html body .yakumo-nav .nav-links a {
    white-space: nowrap; overflow-wrap: normal; word-break: normal;
    padding: 10px 11px; font-size: 14px; font-weight: 500; line-height: 1.5;
}
html body .yakumo-nav .menu-toggle { display: none; }
html body .yakumo-nav.nav-collapsed .menu-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: auto; min-width: 76px; padding: 10px 14px; font-size: 14px;
}
html body .yakumo-nav.nav-collapsed .nav-links {
    display: none; position: absolute; top: 100%; left: 0; width: 100%;
    max-height: calc(100dvh - 80px); overflow-y: auto;
    padding: 16px 24px 24px; border-bottom: 1px solid var(--yakumo-border);
    box-shadow: 0 16px 24px rgb(0 0 0 / 8%);
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 4px 16px;
}
html body .yakumo-nav.nav-collapsed .nav-links.active { display: grid; }
html body .yakumo-nav.nav-collapsed .nav-links a { text-align: left; padding: 12px; border-radius: 10px; }
@media (max-width: 560px) {
    html body .yakumo-nav .nav-container { width: calc(100% - 32px); }
    html body .yakumo-nav.nav-collapsed .nav-links { grid-template-columns: 1fr; padding: 8px 16px 20px; }
}