:root {
    --bg: #0b1020;
    --panel: #131a2b;
    --panel-strong: #10172a;
    --text: #e8edf7;
    --muted: #aab4c7;
    --accent: #8fb7ff;
    --accent-strong: #b6ccff;
    --line: rgba(255, 255, 255, 0.12);
    --notice-bg: #18233a;
    --notice-line: rgba(143, 183, 255, 0.28);
    --success-bg: rgba(44, 182, 125, 0.14);
    --success-line: rgba(44, 182, 125, 0.35);
    --success-text: #cbf6e3;
    --danger-bg: rgba(220, 92, 92, 0.14);
    --danger-line: rgba(220, 92, 92, 0.35);
    --danger-text: #ffd7d7;
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

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

html {
    color-scheme: dark;
}

body {
    margin: 0;
    font-family: Inter, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
}

a {
    color: var(--accent-strong);
}

a:hover {
    color: var(--text);
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.92em;
}

.container {
    width: min(100% - 2rem, 980px);
    margin: 0 auto;
}

.content-notice {
    border-bottom: 1px solid var(--notice-line);
    background: var(--notice-bg);
    color: var(--muted);
}

.content-notice p {
    margin: 0;
    padding: 0.8rem 0;
}

.site-header {
    border-bottom: 1px solid var(--line);
    padding: 1rem 0;
}

.brand {
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
}

.hero {
    padding: 5rem 0 4rem;
    max-width: 760px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 1.02;
    margin: 0 0 1rem;
}

.headline {
    font-size: 1.15rem;
    color: var(--accent);
    margin: 0 0 1rem;
}

.tagline {
    max-width: 62ch;
    color: var(--muted);
    font-size: 1.08rem;
}

.site-footer {
    border-top: 1px solid var(--line);
    padding: 1.5rem 0 2rem;
    margin-top: 3rem;
}

.footer-inner {
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: 0.95rem;
}

.footer-note a {
    color: var(--text);
}

.stack {
    display: grid;
    gap: 1rem;
}

.card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent), var(--panel);
    border: 1px solid var(--line);
    border-radius: 1.1rem;
    box-shadow: var(--shadow);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    margin: 0 0 0.4rem;
    font-size: 1.15rem;
}

.card-text {
    margin: 0;
    color: var(--muted);
}

.button-row {
    display: flex;
    gap: 0.9rem;
    flex-wrap: wrap;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.8rem;
    padding: 0.75rem 1rem;
    border: 1px solid transparent;
    border-radius: 0.8rem;
    background: var(--accent);
    color: #0b1020;
    text-decoration: none;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease, border-color 0.15s ease;
}

.button:hover {
    opacity: 0.95;
    transform: translateY(-1px);
    color: #0b1020;
}

.button:focus-visible,
.form-input:focus-visible {
    outline: 2px solid var(--accent-strong);
    outline-offset: 2px;
}

.button-secondary {
    background: transparent;
    border-color: var(--line);
    color: var(--text);
}

.button-secondary:hover {
    color: var(--text);
}

.button-quiet {
    min-height: auto;
    padding: 0;
    background: transparent;
    border: 0;
    color: var(--muted);
    font: inherit;
}

.button-quiet:hover {
    color: var(--text);
    transform: none;
}

.form-grid {
    display: grid;
    gap: 1rem;
}

.form-field {
    display: grid;
    gap: 0.45rem;
}

.form-field label {
    font-weight: 600;
}

.form-input {
    width: 100%;
    min-height: 2.9rem;
    padding: 0.8rem 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 0.8rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    font: inherit;
}

.form-input::placeholder {
    color: rgba(232, 237, 247, 0.42);
}

.form-help {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.form-errors,
.non-field-errors {
    margin: 0;
    padding-left: 1.2rem;
    color: #ffd7d7;
    font-size: 0.95rem;
}

.messages {
    display: grid;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

.message {
    padding: 0.9rem 1rem;
    border-radius: 0.9rem;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
}

.message.success {
    background: var(--success-bg);
    border-color: var(--success-line);
    color: var(--success-text);
}

.message.error,
.message.warning {
    background: var(--danger-bg);
    border-color: var(--danger-line);
    color: var(--danger-text);
}

.panel-auth-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top, rgba(143, 183, 255, 0.12), transparent 32%),
        var(--bg);
}

.panel-auth-shell {
    width: min(100% - 2rem, 660px);
    margin: 0 auto;
    padding: 4.5rem 0 3rem;
}

.panel-auth-card {
    padding: 2rem;
}

.panel-auth-header {
    margin-bottom: 1.5rem;
}

.panel-auth-title {
    margin: 0 0 0.5rem;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.05;
}

.panel-auth-description {
    margin: 0;
    color: var(--muted);
    max-width: 62ch;
}

.panel-auth-meta {
    margin-top: 1rem;
    color: var(--muted);
    font-size: 0.95rem;
}

.panel-auth-url {
    display: block;
    margin-top: 0.4rem;
    padding: 0.8rem 0.9rem;
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    background: rgba(255, 255, 255, 0.02);
    word-break: break-all;
}

.admin-layout {
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr;
    background:
        radial-gradient(circle at top, rgba(143, 183, 255, 0.08), transparent 28%),
        var(--bg);
}

.admin-header {
    border-bottom: 1px solid var(--line);
    background: rgba(11, 16, 32, 0.88);
    backdrop-filter: blur(10px);
}

.admin-header-inner {
    width: min(100% - 2rem, 1280px);
    margin: 0 auto;
    min-height: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.admin-brand {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.admin-brand-title {
    color: var(--text);
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.admin-brand-subtitle {
    color: var(--muted);
    font-size: 0.92rem;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    flex-wrap: wrap;
}

.admin-user {
    color: var(--muted);
    font-size: 0.95rem;
}

.admin-shell {
    width: min(100% - 2rem, 1280px);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 1.5rem;
    padding: 1.5rem 0 2rem;
}

.admin-sidebar {
    align-self: start;
    position: sticky;
    top: 1.5rem;
}

.admin-nav-card {
    padding: 1rem;
}

.admin-nav-title {
    margin: 0 0 0.8rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.admin-nav {
    display: grid;
    gap: 0.35rem;
}

.admin-nav-link {
    display: block;
    padding: 0.8rem 0.9rem;
    border-radius: 0.8rem;
    color: var(--muted);
    text-decoration: none;
    border: 1px solid transparent;
}

.admin-nav-link:hover,
.admin-nav-link.is-active {
    color: var(--text);
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.03);
}

.admin-main {
    min-width: 0;
}

.admin-main-header {
    margin-bottom: 1.5rem;
}

.admin-main-title {
    margin: 0 0 0.45rem;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.05;
}

.admin-main-description {
    margin: 0;
    color: var(--muted);
    max-width: 65ch;
}

.admin-placeholder-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.admin-placeholder-card {
    height: 100%;
}

.admin-meta-list {
    display: grid;
    gap: 0.7rem;
    margin: 0;
}

.admin-meta-list dt {
    color: var(--muted);
    font-size: 0.92rem;
}

.admin-meta-list dd {
    margin: 0;
}

.admin-inline-form {
    margin: 0;
}

@media (max-width: 960px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: static;
    }
}

@media (max-width: 640px) {
    .panel-auth-shell {
        padding-top: 2.5rem;
    }

    .panel-auth-card,
    .card-body {
        padding: 1.2rem;
    }

    .admin-header-inner {
        align-items: flex-start;
        padding: 1rem 0;
        flex-direction: column;
    }
}