*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #1a1b1e;
    --bg-card: #25262b;
    --bg-input: #2c2e33;
    --fg: #c1c2c5;
    --fg-muted: #909296;
    --accent: #4c9aff;
    --ok: #51cf66;
    --warn: #fcc419;
    --err: #ff6b6b;
    --border: #373a40;
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.5;
    min-height: 100vh;
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 0.5rem;
}

nav .brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent);
}

nav .nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

nav a {
    color: var(--fg);
    text-decoration: none;
    font-size: 0.9rem;
}

nav a:hover {
    color: var(--accent);
}

nav .nav-user {
    color: var(--fg-muted);
    font-size: 0.85rem;
}

/* Buttons */
.btn, button {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--fg);
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
    transition: background 0.15s;
}

.btn:hover, button:hover {
    background: var(--border);
}

.btn-ok, button.btn-ok {
    background: var(--ok);
    color: #000;
    border-color: var(--ok);
}

.btn-ok:hover {
    opacity: 0.85;
}

.btn-danger, button.btn-danger {
    background: var(--err);
    color: #000;
    border-color: var(--err);
}

.btn-danger:hover {
    opacity: 0.85;
}

.btn-sm {
    padding: 0.25rem 0.6rem;
    font-size: 0.8rem;
}

.btn-link {
    background: none;
    border: none;
    color: var(--fg-muted);
    cursor: pointer;
    padding: 0;
}

.btn-link:hover {
    color: var(--err);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.card-ok {
    border-color: var(--ok);
}

.card-err {
    border-color: var(--err);
}

.card-muted {
    opacity: 0.7;
}

.card-active {
    border-color: var(--accent);
    position: relative;
}

.active-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent);
    color: #000;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border-radius: 100px;
}

/* Forms */
form.form-col {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

form.form-col:not(.form-wide) {
    max-width: 600px;
}

form.form-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.9rem;
    color: var(--fg-muted);
}

label:has(input[type="radio"]),
label:has(input[type="checkbox"]) {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    color: var(--fg);
}

input, select, textarea {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--fg);
    font-size: 0.9rem;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent);
}

fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

legend {
    font-weight: 600;
    padding: 0 0.5rem;
    color: var(--fg-muted);
    font-size: 0.85rem;
}

small {
    color: var(--fg-muted);
    font-size: 0.8rem;
}

/* Layout */
main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1.5rem;
}

h1, h2, h3 {
    color: var(--fg);
    margin-bottom: 0.75rem;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.instance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.tab-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

/* Status badges */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-running {
    background: var(--ok);
    color: #000;
}

.status-starting {
    background: var(--warn);
    color: #000;
}

.status-stopped {
    background: var(--fg-muted);
    color: #000;
}

.status-error, .status-not_found {
    background: var(--err);
    color: #000;
}

.status-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.75rem 0;
}

/* Tags */
.tag {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    border-radius: 100px;
    font-size: 0.75rem;
    background: var(--border);
    color: var(--fg-muted);
}

.tag-admin {
    background: var(--warn);
    color: #000;
}

/* Instance meta */
.instance-meta, .meta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--fg-muted);
    margin-bottom: 0.5rem;
}

.actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}

.players {
    font-size: 0.9rem;
    color: var(--accent);
}

/* Player list */
.player-list {
    list-style: none;
    margin-top: 0.5rem;
}

.player-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table th, .table td {
    text-align: left;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.table th {
    color: var(--fg-muted);
    font-weight: 600;
}

/* Flash messages */
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.flash-err {
    background: color-mix(in srgb, var(--err) 15%, transparent);
    border: 1px solid var(--err);
    color: var(--err);
}

.flash-ok {
    background: color-mix(in srgb, var(--ok) 15%, transparent);
    border: 1px solid var(--ok);
    color: var(--ok);
}

.flash-warn {
    background: color-mix(in srgb, var(--warn) 15%, transparent);
    border: 1px solid var(--warn);
    color: var(--warn);
}

/* Login page */
.login-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    max-width: 380px;
}

.login-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-form button {
    margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 600px) {
    nav {
        flex-direction: column;
        align-items: flex-start;
    }

    .instance-grid {
        grid-template-columns: 1fr;
    }
}