:root {
    --nt-bg: #f4efe6;
    --nt-bg-soft: #faf7f0;
    --nt-ink: #21182d;
    --nt-ink-soft: #4f4555;
    --nt-muted: #756b79;
    --nt-panel: #fffcf6;
    --nt-panel-strong: #fffaf1;
    --nt-line: rgba(74, 53, 88, 0.16);
    --nt-line-strong: rgba(74, 53, 88, 0.26);
    --nt-night: #1b1427;
    --nt-night-2: #2b1935;
    --nt-gold: #c8a456;
    --nt-gold-light: #e3c980;
    --nt-gold-dark: #886724;
    --nt-wine: #6e2d4f;
    --nt-danger: #983044;
    --nt-success: #4f733f;
    --nt-shadow-sm: 0 5px 18px rgba(36, 25, 45, 0.055);
    --nt-shadow-md: 0 14px 40px rgba(36, 25, 45, 0.09);
    --nt-radius-sm: 0.65rem;
    --nt-radius-md: 0.9rem;
    --nt-radius-lg: 1.15rem;
    --nt-touch: 2.75rem;
    color-scheme: light;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--nt-bg);
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;
    color: var(--nt-ink);
    background:
        radial-gradient(circle at 88% 3%, rgba(197, 164, 96, 0.14), transparent 28rem),
        var(--nt-bg);
    font-family: "Yu Gothic UI", "Yu Gothic", Meiryo, "Helvetica Neue", Arial, sans-serif;
    font-size: 0.96rem;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
a,
input,
select,
textarea {
    -webkit-tap-highlight-color: transparent;
}

img,
svg {
    max-width: 100%;
}

h1,
h2,
h3,
p {
    overflow-wrap: anywhere;
}

h1,
h2,
h3 {
    color: var(--nt-ink);
}

h1 {
    font-family: Georgia, "Yu Mincho", "YuMincho", serif;
    font-size: clamp(1.85rem, 5vw, 2.8rem);
    line-height: 1.22;
    letter-spacing: 0.035em;
}

h1:focus {
    outline: none;
}

a,
.btn-link {
    color: var(--nt-wine);
    text-underline-offset: 0.18em;
}

a:hover {
    color: #53213c;
}

button:not(:disabled),
[role="button"]:not([aria-disabled="true"]) {
    cursor: pointer;
}

.btn {
    min-height: var(--nt-touch);
    padding: 0.58rem 1rem;
    border-radius: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease, background-color 140ms ease;
}

.btn-sm {
    min-height: 2.35rem;
    padding: 0.4rem 0.75rem;
    border-radius: 0.55rem;
    font-size: 0.8rem;
}

.btn-primary {
    color: #1a1325;
    background: linear-gradient(180deg, #d8b866, var(--nt-gold));
    border-color: var(--nt-gold);
    box-shadow: 0 8px 20px rgba(112, 81, 28, 0.15);
}

.btn-primary:hover,
.btn-primary:focus {
    color: #1a1325;
    background: linear-gradient(180deg, #e2c779, #d1ae60);
    border-color: #d1ae60;
    box-shadow: 0 10px 24px rgba(112, 81, 28, 0.2);
}

.btn-outline-primary {
    color: var(--nt-wine);
    border-color: rgba(110, 45, 79, 0.48);
    background: rgba(255, 252, 246, 0.62);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    color: #fff;
    background-color: var(--nt-wine);
    border-color: var(--nt-wine);
}

.btn-outline-secondary {
    color: var(--nt-muted);
    border-color: var(--nt-line-strong);
    background: rgba(255, 252, 246, 0.6);
}

.btn-outline-danger {
    color: var(--nt-danger);
    border-color: rgba(152, 48, 68, 0.4);
}

.btn-danger {
    background-color: var(--nt-danger);
    border-color: var(--nt-danger);
}

.btn:focus-visible,
.btn-link:focus-visible,
.form-control:focus,
.form-select:focus,
.form-check-input:focus,
button:focus-visible,
a:focus-visible {
    outline: none;
    border-color: var(--nt-gold);
    box-shadow: 0 0 0 0.2rem rgba(197, 164, 96, 0.27);
}

.form-label,
legend {
    color: var(--nt-ink-soft);
    font-size: 0.82rem;
    font-weight: 750;
    letter-spacing: 0.025em;
}

.form-control,
.form-select {
    min-height: var(--nt-touch);
    padding: 0.65rem 0.8rem;
    border-color: var(--nt-line-strong);
    border-radius: 0.6rem;
    background-color: rgba(255, 253, 248, 0.94);
    color: var(--nt-ink);
    box-shadow: inset 0 1px 1px rgba(45, 32, 57, 0.025);
}

.form-control::placeholder {
    color: #968d99;
}

textarea.form-control {
    line-height: 1.7;
}

.form-check-input {
    width: 1.15rem;
    height: 1.15rem;
    margin-top: 0.22em;
    border-color: rgba(74, 53, 88, 0.38);
}

.form-check-input:checked {
    border-color: var(--nt-wine);
    background-color: var(--nt-wine);
}

.text-muted {
    color: var(--nt-muted) !important;
}

.text-success {
    color: var(--nt-success) !important;
}

.text-danger {
    color: var(--nt-danger) !important;
}

.content {
    width: 100%;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #609c73;
}

.invalid {
    outline: 1px solid #b32121;
}

.validation-message {
    color: #b32121;
}

#blazor-error-ui {
    color-scheme: light only;
    display: none;
    position: fixed;
    z-index: 2200;
    right: 0.75rem;
    bottom: calc(5rem + env(safe-area-inset-bottom));
    left: 0.75rem;
    width: auto;
    padding: 0.8rem 2.5rem 0.8rem 1rem;
    border: 1px solid rgba(152, 48, 68, 0.25);
    border-radius: 0.75rem;
    background: #fff3e6;
    color: #692235;
    box-shadow: var(--nt-shadow-md);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.65rem;
}

.install-promotion-ui {
    position: fixed;
    z-index: 2050;
    right: 0.75rem;
    bottom: calc(0.75rem + env(safe-area-inset-bottom));
    left: 0.75rem;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.7rem 0.85rem;
    padding: 0.85rem;
    border: 1px solid rgba(200, 164, 86, 0.46);
    border-radius: 0.9rem;
    background: var(--nt-panel-strong);
    color: var(--nt-ink);
    box-shadow: var(--nt-shadow-md);
}

.install-promotion-ui[hidden],
.update-notification-visible .install-promotion-ui {
    display: none;
}

.install-promotion-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.65rem;
    box-shadow: 0 3px 10px rgba(33, 24, 45, 0.2);
}

.install-promotion-copy {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 0.12rem;
}

.install-promotion-copy strong {
    color: var(--nt-ink);
    font-size: 0.92rem;
}

.install-promotion-copy > span {
    color: var(--nt-muted);
    font-size: 0.76rem;
    line-height: 1.5;
}

.install-promotion-actions {
    display: flex;
    grid-column: 1 / -1;
    align-items: center;
    justify-content: flex-end;
    gap: 0.25rem;
}

.install-promotion-actions .btn-link {
    color: var(--nt-muted);
    text-decoration: none;
}

.update-available-ui {
    position: fixed;
    z-index: 2100;
    right: 0.75rem;
    bottom: calc(0.75rem + env(safe-area-inset-bottom));
    left: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    padding: 0.8rem 0.85rem 0.8rem 1rem;
    border: 1px solid rgba(200, 164, 86, 0.46);
    border-radius: 0.8rem;
    background: var(--nt-panel-strong);
    color: var(--nt-ink);
    font-weight: 700;
    box-shadow: var(--nt-shadow-md);
}

.update-available-ui[data-state="ready"] {
    border-color: rgba(79, 115, 63, 0.48);
}

.update-available-ui[data-state="error"] {
    border-color: rgba(152, 48, 68, 0.52);
}

.update-available-ui[hidden] {
    display: none;
}

.update-status-copy {
    display: inline-flex;
    min-width: 0;
    align-items: center;
    gap: 0.65rem;
}

.update-status-spinner {
    width: 1.05rem;
    height: 1.05rem;
    flex: 0 0 auto;
    border: 2px solid rgba(136, 103, 36, 0.24);
    border-top-color: var(--nt-gold-dark);
    border-radius: 50%;
    animation: update-status-spin 700ms linear infinite;
}

.update-available-ui .btn {
    flex: 0 0 auto;
}

@keyframes update-status-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    .update-status-spinner {
        animation-duration: 1.5s;
    }
}

.blazor-error-boundary {
    padding: 1rem;
    border-radius: 0.65rem;
    background: #8f1d32;
    color: white;
}

.blazor-error-boundary::after {
    content: "エラーが発生しました。";
}

.loading-progress {
    position: absolute;
    display: block;
    width: 6rem;
    height: 6rem;
    inset: 28vh 0 auto;
    margin: 0 auto;
}

.loading-progress circle {
    fill: none;
    stroke: rgba(33, 24, 45, 0.14);
    stroke-width: 0.45rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--nt-gold);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    inset: calc(28vh + 2.35rem) 0 auto 0.1rem;
    color: var(--nt-muted);
    font-size: 0.78rem;
    font-weight: 700;
    text-align: center;
}

.loading-progress-text::after {
    content: var(--blazor-load-percentage-text, "Loading");
}

code {
    color: #8f1d57;
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
    text-align: start;
}

::selection {
    background: rgba(197, 164, 96, 0.35);
    color: var(--nt-ink);
}

@media (hover: hover) {
    .btn:not(:disabled):hover {
        transform: translateY(-1px);
    }
}

@media (min-width: 768px) {
    #blazor-error-ui {
        right: 1.5rem;
        bottom: 1.5rem;
        left: auto;
        width: min(34rem, calc(100% - 3rem));
    }

    .update-available-ui {
        right: 1.5rem;
        bottom: 1.5rem;
        left: auto;
        width: min(32rem, calc(100% - 3rem));
    }

    .install-promotion-ui {
        right: auto;
        bottom: 1.5rem;
        left: 1.5rem;
        width: min(36rem, calc(100% - 3rem));
        grid-template-columns: auto minmax(0, 1fr) auto;
        padding: 0.85rem 0.95rem;
    }

    .install-promotion-actions {
        grid-column: auto;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 0.92rem;
    }

    .btn {
        min-height: 2.9rem;
    }
}

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