:root {
    color-scheme: dark;
    --bg-deep: #050914;
    --bg-mid: #0b1530;
    --text-main: #eef5ff;
    --text-soft: rgba(220, 232, 255, 0.76);
    --accent: #67d8ff;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: "Sora", sans-serif;
    background:
        radial-gradient(circle at top, rgba(64, 112, 226, 0.18), transparent 36%),
        linear-gradient(180deg, var(--bg-mid), var(--bg-deep) 72%);
    color: var(--text-main);
}

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

body {
    overflow-x: hidden;
}

body::before,
body::after {
    content: "";
    position: fixed;
    pointer-events: none;
    z-index: -1;
}

body::before {
    top: -12rem;
    left: -8rem;
    width: 34rem;
    height: 34rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(103, 216, 255, 0.16), transparent 68%);
    filter: blur(8px);
}

body::after {
    right: -10rem;
    bottom: -14rem;
    width: 38rem;
    height: 38rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 163, 92, 0.12), transparent 72%);
    filter: blur(10px);
}

a {
    color: inherit;
}

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

h1:focus {
    outline: none;
}

#app {
    min-height: 100vh;
}

#blazor-error-ui {
    display: none;
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    background: rgba(139, 20, 20, 0.94);
    color: white;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 0.9rem;
}

.loading-brand {
    display: grid;
    gap: 0.3rem;
    width: min(24rem, calc(100vw - 2rem));
    margin: 16vh auto 1.1rem;
    text-align: center;
}

.loading-brand strong {
    font-family: "Rajdhani", sans-serif;
    font-size: clamp(2.4rem, 8vw, 4.3rem);
    letter-spacing: 0.08em;
    line-height: 0.92;
    text-transform: uppercase;
}

.loading-brand span {
    color: var(--text-soft);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 0 auto 1rem;
}

.loading-progress circle {
    fill: none;
    stroke: rgba(255, 255, 255, 0.18);
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--accent);
    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;
    text-align: center;
    font-family: "Rajdhani", sans-serif;
    letter-spacing: 0.16em;
    inset: calc(16vh + 8.7rem) 0 auto 0.2rem;
}

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