:root {
    --bg: #0d0f12;
    --panel: #151a23;
    --panel2: #1c2330;
    --border: #2a3144;
    --text: #e7eefb;
    --muted: #9aa4b5;
    --accent: #4f9cf9;
    --green: #4caf6e;
    --red: #ff5a5a;
    --yellow: #f5c842;
}
* {
    box-sizing: border-box;
}
body {
    margin: 0;
    background: linear-gradient(140deg, #0d0f12, #111827);
    color: var(--text);
    font-family:
        Inter,
        system-ui,
        -apple-system,
        Segoe UI,
        sans-serif;
    line-height: 1.5;
}
a {
    color: var(--accent);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
.shell {
    min-height: 100vh;
}
.topbar {
    height: 60px;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.2rem;
    border-bottom: 1px solid var(--border);
    background: rgba(13, 15, 18, 0.9);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand {
    font-weight: 800;
    letter-spacing: -0.02em;
}
.topbar-guide {
    display: flex;
    flex-direction: column;
    gap: 0.05rem;
    min-width: 0;
}
.topbar-guide strong {
    font-weight: 700;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 40vw;
}
.topbar-guide span {
    font-size: 0.72rem;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 40vw;
}
.badge {
    font-size: 0.72rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.16rem 0.5rem;
    color: var(--muted);
}
.spacer {
    flex: 1;
}
.nav {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.btn,
.button,
button {
    background: var(--accent);
    color: #fff;
    border: 0;
    border-radius: 10px;
    padding: 0.55rem 0.85rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.btn.secondary,
.button.secondary {
    background: var(--panel2);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn.danger,
.button.danger {
    background: var(--red);
}
.btn.ghost,
.button.ghost {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--border);
}
.container {
    max-width: 1160px;
    margin: 0 auto;
}
.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1rem;
}
.card {
    background: rgba(21, 26, 35, 0.92);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.25);
    padding: 1.2rem;
}
.login-card {
    width: min(420px, 100%);
}
h1,
h2,
h3 {
    margin: 0.2rem 0 0.75rem;
    line-height: 1.15;
}
p {
    color: var(--muted);
}
label {
    display: block;
    margin: 0.75rem 0 0.35rem;
    color: var(--muted);
    font-size: 0.9rem;
}
input,
textarea,
select {
    width: 100%;
    background: #0f141d;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.65rem 0.75rem;
    font: inherit;
}
textarea {
    min-height: 100px;
    resize: vertical;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}
/* Dashboard page */
.dashboard {
    padding: 20px;
}
.hero-card {
    background: linear-gradient(
        135deg,
        rgba(28, 35, 50, 0.85) 0%,
        rgba(13, 17, 28, 0.9) 100%
    );
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.2rem 2.5rem 2rem;
    margin-bottom: 2.5rem;
    position: relative;
    overflow: hidden;
}
.hero-card::after {
    content: "";
    position: absolute;
    top: -100px;
    right: -80px;
    width: 380px;
    height: 380px;
    background: radial-gradient(
        circle,
        rgba(79, 156, 249, 0.07) 0%,
        transparent 65%
    );
    pointer-events: none;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(76, 175, 110, 0.1);
    border: 1px solid rgba(76, 175, 110, 0.28);
    color: #6ed98a;
    font-size: 0.73rem;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.28rem 0.8rem;
    margin-bottom: 1.1rem;
    letter-spacing: 0.01em;
}
.hero-badge::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #6ed98a;
    flex-shrink: 0;
}
.hero-title {
    font-size: 2.3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--text);
    margin: 0 0 0.85rem;
}
.hero-accent {
    color: var(--accent);
}
.hero-desc {
    color: var(--muted);
    font-size: 0.875rem;
    max-width: 560px;
    line-height: 1.7;
    margin: 0 0 1.75rem;
}
.hero-stats {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
}
.stat-box {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.65rem 1rem;
    min-width: 86px;
}
.stat-box strong {
    display: block;
    font-size: 1rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.02em;
}
.stat-box span {
    display: block;
    font-size: 0.65rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-top: 0.12rem;
}
.section-head {
    margin-bottom: 1.25rem;
}
.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 0.2rem;
}
.section-sub {
    font-size: 0.81rem;
    color: var(--muted);
    margin: 0;
}
.guide-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.guide-card {
    overflow: hidden;
    padding: 0;
    transition:
        transform 0.22s ease,
        box-shadow 0.22s ease,
        border-color 0.22s ease;
}
.guide-card:hover {
    transform: translateY(-4px);
    box-shadow:
        0 20px 56px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(79, 156, 249, 0.28);
    border-color: rgba(79, 156, 249, 0.35);
}
.cover {
    height: 180px;
    background: linear-gradient(135deg, #1a2540, #0f1929);
    position: relative;
    overflow: hidden;
}
.cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.guide-card:hover .cover img {
    transform: scale(1.04);
}
.cover-fallback {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #19253d 0%, #0f1929 100%);
    color: rgba(79, 156, 249, 0.4);
}
.cover-badge {
    position: absolute;
    bottom: 0.65rem;
    right: 0.65rem;
    background: rgba(79, 156, 249, 0.15);
    border: 1px solid rgba(79, 156, 249, 0.3);
    color: var(--accent);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    border-radius: 999px;
    padding: 0.18rem 0.55rem;
}
.cover-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        transparent 40%,
        rgba(13, 17, 28, 0.6) 100%
    );
    pointer-events: none;
}
.guide-body {
    padding: 1rem 1.2rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.guide-title {
    font-size: 0.97rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.guide-desc {
    font-size: 0.8rem;
    color: var(--muted);
    margin: 0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.guide-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.guide-btn-primary {
    flex: 1;
    justify-content: center;
    font-size: 0.84rem;
    padding: 0.52rem 1rem;
}
.guide-btn-secondary {
    background: var(--panel2);
    color: var(--text);
    border: 1px solid var(--border);
    font-size: 0.84rem;
    padding: 0.52rem 1rem;
}
.guide-empty {
    grid-column: 1 / -1;
}
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 0.75rem 0;
}
.tag {
    font-size: 0.72rem;
    background: #20283a;
    color: #a7c7ff;
    border: 1px solid #2e3b55;
    border-radius: 999px;
    padding: 0.14rem 0.45rem;
}
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--panel);
    border-radius: 14px;
    overflow: hidden;
}
.table th,
.table td {
    border-bottom: 1px solid var(--border);
    padding: 0.7rem;
    text-align: left;
    vertical-align: top;
}
.table th {
    color: var(--muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}
.alert {
    padding: 0.7rem 0.9rem;
    border-radius: 12px;
    margin: 0.7rem 0;
}
.alert.ok {
    background: rgba(76, 175, 110, 0.12);
    border: 1px solid rgba(76, 175, 110, 0.35);
    color: #bff5d1;
}
.alert.err {
    background: rgba(255, 90, 90, 0.12);
    border: 1px solid rgba(255, 90, 90, 0.35);
    color: #ffbbbb;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.check {
    display: flex;
    gap: 0.55rem;
    align-items: center;
    margin: 0.85rem 0;
}
.check input {
    width: auto;
}
.viewer-head {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    margin-bottom: 1rem;
}
.iframe-wrap {
    width: 100%;
    height: 100%;
    border: 1px solid var(--border);
    overflow: hidden;
    background: #fff;
}
.iframe-wrap iframe {
    width: 100%;
    height: 100%;
    border: 0;
    background: #fff;
}
.muted {
    color: var(--muted);
}
@media (max-width: 760px) {
    .topbar {
        height: auto;
        min-height: 58px;
        flex-wrap: wrap;
        padding: 0.7rem;
    }
    .container {
        padding: 1rem;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .nav {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    .viewer-head {
        align-items: flex-start;
        flex-direction: column;
    }
}
.container:has(.iframe-wrap) {
    padding: 0;
    max-width: none;
    width: 100%;
    height: calc(100vh - 60px);
    overflow: hidden;
}