/* ── Design tokens ─────────────────────────────────────────────── */
:root {
    --color-bg: #0b0f17;
    --color-bg-pure: #000000;
    --color-text: #f8fafc;
    --color-text-muted: rgba(248, 250, 252, 0.62);
    --color-accent: #ffcc00;
    --color-accent-soft: #fde047;
    --color-border: rgba(248, 250, 252, 0.08);
    --color-border-accent: rgba(255, 204, 0, 0.22);

    --font-sans: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --letter-spacing-wide: 0.06em;
    --letter-spacing-brand: 0.04em;
    --line-height-body: 1.75;
    --line-height-heading: 1.2;

    --header-height: 4.5rem;
    --content-max-width: 72rem;
    --content-padding-x: clamp(1.25rem, 4vw, 3rem);
    --transition-fast: 0.22s ease;
    --transition-color: color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
}

.app-loading {
    display: grid;
    place-items: center;
    min-height: 100vh;
    color: var(--color-text-muted);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    font-size: 0.75rem;
}

/* ── Base reset & typography ───────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
    margin: 0;
    min-height: 100vh;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: var(--letter-spacing-brand);
    line-height: var(--line-height-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 0.75em;
    font-weight: 500;
    letter-spacing: var(--letter-spacing-wide);
    line-height: var(--line-height-heading);
    color: var(--color-text);
}

p {
    margin: 0 0 1.25em;
    color: var(--color-text-muted);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-color);
}

a:hover,
a:focus-visible {
    color: var(--color-accent);
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

::selection {
    background-color: rgba(255, 204, 0, 0.28);
    color: var(--color-text);
}

/* ── Layout shell ──────────────────────────────────────────────── */
.layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-main {
    flex: 1;
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: calc(var(--header-height) + 3rem) var(--content-padding-x) 5rem;
}

/* ── Top navigation ────────────────────────────────────────────── */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(11, 15, 23, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--color-border);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    height: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--content-padding-x);
}

.site-brand {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    color: var(--color-text);
    white-space: nowrap;
}

.site-brand:hover,
.site-brand:focus-visible {
    color: var(--color-accent);
}

.site-nav-links {
    display: flex;
    align-items: center;
    gap: clamp(1.25rem, 3vw, 2.5rem);
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav-links a {
    font-size: 0.8125rem;
    font-weight: 400;
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: var(--transition-color);
}

.site-nav-links a:hover,
.site-nav-links a:focus-visible {
    color: var(--color-accent);
}

/* ── Page sections (shared) ────────────────────────────────────── */
.page-section {
    padding-block: clamp(3rem, 8vw, 6rem);
    scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

.page-section + .page-section {
    border-top: 1px solid var(--color-border);
}

.section-label {
    display: block;
    margin-bottom: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.section-title {
    margin-bottom: 1.5rem;
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 500;
}

/* ── Blazor / form utilities (preserved) ───────────────────────── */
h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.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;
}

/* ── Responsive nav ────────────────────────────────────────────── */
@media (max-width: 640px) {
    .site-nav {
        gap: 1rem;
    }

    .site-brand {
        font-size: 0.8rem;
    }

    .site-nav-links {
        gap: 0.85rem;
    }

    .site-nav-links a {
        font-size: 0.7rem;
    }
}