:root,
[data-theme="dark"] {
    --sb-base: #0f1115;
    --sb-surface: #181b22;
    --sb-elevated: #232733;
    --sb-accent: #3d8bfd;
    --sb-accent-hover: #2f74d9;
    --sb-foreground: #eef0f4;
    --sb-muted: #8b93a3;
    --sb-border: rgba(139, 147, 163, 0.15);
    --sb-error: #f76e6e;
    --sb-danger: #f76e6e;
    --sb-success: #3ddc97;
    --sb-info: #3d8bfd;

    color-scheme: dark;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.6;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--sb-base);
    color: var(--sb-foreground);
    min-height: 100vh;
}

h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

a {
    color: var(--sb-accent);
    text-decoration: none;
}

a:hover {
    color: var(--sb-accent-hover);
    text-decoration: underline;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ── Nav ── */
nav.site-nav {
    background: var(--sb-surface);
    border-bottom: 1px solid var(--sb-border);
}

nav.site-nav .nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 60px;
    display: flex;
    align-items: center;
    gap: 2rem;
}

nav.site-nav .nav-brand {
    color: var(--sb-foreground);
    font-size: 1.05rem;
}

nav.site-nav .nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav.site-nav .nav-links a {
    color: var(--sb-muted);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
}

nav.site-nav .nav-links a:hover {
    color: var(--sb-foreground);
    background: var(--sb-elevated);
    text-decoration: none;
}

nav.site-nav .nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    list-style: none;
    margin: 0 0 0 auto;
    padding: 0;
}

nav.site-nav .nav-user {
    color: var(--sb-muted);
    font-size: 0.9rem;
}

nav.site-nav .btn-logout {
    background: transparent;
    border: 1px solid var(--sb-border);
    color: var(--sb-muted);
    font-size: 0.8rem;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
}

nav.site-nav .btn-logout:hover {
    color: var(--sb-error);
    border-color: var(--sb-error);
}

main.container {
    padding: 2rem 1.5rem;
}

/* ── Flash messages ── */
.flash {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.flash-error {
    background: rgba(247, 110, 110, 0.12);
    color: var(--sb-error);
    border: 1px solid rgba(247, 110, 110, 0.3);
}

/* ── Cards ── */
article {
    background: var(--sb-surface);
    border: 1px solid var(--sb-border);
    border-radius: 10px;
    padding: 1.5rem;
}

/* ── Tables ── */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--sb-surface);
    border: 1px solid var(--sb-border);
    border-radius: 10px;
    overflow: hidden;
}

thead {
    background: var(--sb-elevated);
}

thead th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sb-muted);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--sb-border);
}

tbody td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--sb-border);
    font-size: 0.9rem;
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr:hover {
    background: rgba(35, 39, 51, 0.6);
}

/* ── Forms ── */
label {
    display: block;
    color: var(--sb-muted);
    font-size: 0.875rem;
    font-weight: 500;
    margin: 1rem 0 0.35rem;
}

input, select, textarea {
    width: 100%;
    background: var(--sb-surface);
    border: 1px solid var(--sb-border);
    color: var(--sb-foreground);
    border-radius: 8px;
    padding: 0.55rem 0.75rem;
    font-size: 0.95rem;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--sb-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(61, 139, 253, 0.2);
}

button, [type="submit"] {
    background: var(--sb-accent);
    border: 1px solid var(--sb-accent);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    padding: 0.6rem 1.25rem;
    cursor: pointer;
    margin-top: 1.25rem;
}

button:hover, [type="submit"]:hover {
    background: var(--sb-accent-hover);
    border-color: var(--sb-accent-hover);
}

/* ── Password toggle ── */
.password-field {
    position: relative;
}

.password-field input {
    padding-right: 2.75rem;
}

.password-toggle {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 0.25rem;
    margin: 0;
    cursor: pointer;
    color: var(--sb-muted);
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    color: var(--sb-foreground);
    background: none;
    border: none;
}

.password-toggle svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ── Login page ── */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sb-base);
}

.login-card {
    width: 100%;
    max-width: 380px;
}

.login-card article {
    padding: 2.25rem;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 0.25rem;
}

.login-card header p {
    text-align: center;
    color: var(--sb-muted);
    margin: 0;
}

/* ── Footer ── */
.site-footer {
    text-align: center;
    padding: 1rem 0 1.5rem;
    color: var(--sb-muted);
    opacity: 0.6;
    font-size: 0.8rem;
}