/* ===================================================================
   TutVPN admin — utility interface
   Dark, technical, dense. Optimised for scanning and fast edits.
   =================================================================== */

:root {
    --bg: #0f0f14;
    --surface: #1a1a24;
    --surface-hi: #22222f;
    --border: #2c2c3a;
    --border-hi: #3f3f52;
    --text: #e8e8f0;
    --text-dim: #7f7f8f;
    --accent: #f0c500;
    --accent-hi: #ffd914;
    --accent-ink: #0f0f14;
    --success: #4a9950;
    --danger: #c9615e;
    --warn: #c98a3a;

    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Mono", Menlo,
                 "Courier New", monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

/* -------------- header nav -------------- */

header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 700;
    letter-spacing: -0.01em;
}
.brand .dim { color: var(--text-dim); font-weight: 400; }

header nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
header nav a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 8px 14px;
    font-size: 14px;
    border: 1px solid transparent;
}
header nav a:hover { color: var(--text); }
header nav a.active {
    color: var(--text);
    background: var(--surface-hi);
    border-color: var(--border-hi);
}

.logout {
    margin-left: 12px;
    display: inline;
}
.logout button {
    background: transparent;
    border: 1px solid var(--border-hi);
    color: var(--text-dim);
    padding: 8px 14px;
    font-size: 14px;
    cursor: pointer;
    font-family: inherit;
}
.logout button:hover {
    color: var(--danger);
    border-color: var(--danger);
}

/* -------------- main + footer -------------- */

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

main h1 {
    font-size: 26px;
    letter-spacing: -0.02em;
    margin: 0 0 8px;
}

.hint {
    color: var(--text-dim);
    margin: 0 0 32px;
    max-width: 720px;
}
.hint code {
    background: var(--surface);
    padding: 1px 6px;
    border: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 12.5px;
}

footer {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px;
    text-align: center;
}
.dim { color: var(--text-dim); }

/* -------------- editor rows -------------- */

.editor-row {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 20px;
    margin-bottom: 16px;
}

.editor-row header {
    /* override sticky nav header rules for inner headers */
    position: static;
    padding: 0 0 12px;
    background: none;
    border: none;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.editor-row h2, .editor-row h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.005em;
}
.editor-row h3 { font-size: 14px; }

.editor-row .meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
}
.editor-row .meta code {
    font-family: var(--font-mono);
    color: var(--text-dim);
    background: none;
    border: none;
    padding: 0;
    font-size: 12px;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid transparent;
}
.badge.modified {
    color: var(--warn);
    border-color: var(--warn);
}
.badge.saved {
    color: var(--success);
    border-color: var(--success);
    animation: fadeaway 3s ease-out forwards;
}
@keyframes fadeaway {
    0%, 60% { opacity: 1; }
    100% { opacity: 0; }
}

/* -------------- form controls -------------- */

textarea, input[type="text"], input[type="number"], input[type="password"] {
    display: block;
    width: 100%;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border-hi);
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.5;
}
textarea:focus, input:focus {
    outline: none;
    border-color: var(--accent);
}
textarea { resize: vertical; min-height: 100px; }

label {
    display: block;
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 4px;
}
label input { margin-top: 6px; }
label.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    margin-top: 16px;
}
label.checkbox input {
    width: auto;
    margin: 0;
}

.row-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

button {
    background: var(--surface-hi);
    color: var(--text);
    border: 1px solid var(--border-hi);
    padding: 8px 16px;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
}
button:hover { background: var(--border-hi); }

button.primary {
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
    font-weight: 600;
}
button.primary:hover { background: var(--accent-hi); }
button.secondary {
    color: var(--text-dim);
}
button.danger {
    color: var(--danger);
    border-color: var(--danger);
}
button.danger:hover {
    background: var(--danger);
    color: var(--bg);
}

/* -------------- inline (single-field) editor -------------- */

.editor-row.inline {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 12px 16px;
    padding: 16px 20px;
}
.editor-row.inline header {
    padding: 0;
    grid-column: 1 / -1;
}
.editor-row.inline form {
    display: contents;
}
.editor-row.inline input[type="text"] {
    width: 100%;
}
.editor-row.inline .row-actions {
    margin: 0;
    align-self: end;
    grid-column: 2;
}

/* -------------- menus editor -------------- */

.section-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.section-tabs a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 6px 12px;
    font-size: 13px;
    border: 1px solid var(--border);
}
.section-tabs a:hover { color: var(--text); border-color: var(--border-hi); }

.menu-editor .menu-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 12px;
}
.menu-editor h4 {
    margin: 0 0 8px;
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.menu-editor ul {
    list-style: none;
    margin: 0;
    padding: 0;
    background: var(--bg);
    border: 1px solid var(--border);
    min-height: 100px;
}
.menu-editor ul li {
    display: grid;
    grid-template-columns: 20px 1fr auto auto;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.menu-editor ul li:last-child { border-bottom: none; }
.menu-editor ul li small {
    font-family: var(--font-mono);
    font-size: 11px;
}
.menu-editor .handle {
    color: var(--text-dim);
    cursor: grab;
    user-select: none;
}
.menu-editor ul li[draggable="true"]:active { opacity: 0.5; }
.menu-editor .remove, .menu-editor .add {
    background: transparent;
    border: 1px solid var(--border-hi);
    color: var(--text-dim);
    width: 24px;
    height: 24px;
    padding: 0;
    font-size: 14px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.menu-editor .remove:hover { color: var(--danger); border-color: var(--danger); }
.menu-editor .add:hover { color: var(--accent); border-color: var(--accent); }

.menu-editor .available li {
    grid-template-columns: 1fr auto;
    color: var(--text-dim);
}

/* -------------- plans editor -------------- */

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 8px;
}

table.pricing {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: var(--bg);
    border: 1px solid var(--border);
}
table.pricing th, table.pricing td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
}
table.pricing thead th {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}
table.pricing tbody th {
    color: var(--text);
    font-weight: 500;
    font-size: 14px;
}
table.pricing input {
    background: transparent;
    border: none;
    width: 100%;
    padding: 4px 8px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text);
}
table.pricing input:focus {
    background: var(--surface-hi);
    outline: 1px solid var(--accent);
}
table.pricing input.modified {
    color: var(--warn);
}

.reset-section {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    text-align: center;
}

/* -------------- banner (saved / error) -------------- */

.banner {
    padding: 12px 16px;
    margin-bottom: 24px;
    border: 1px solid;
    font-size: 14px;
}
.banner.saved {
    color: var(--success);
    border-color: var(--success);
}

section {
    margin-bottom: 48px;
}
section h2 {
    font-size: 18px;
    letter-spacing: -0.01em;
    margin: 0 0 8px;
    padding-top: 24px;
}

/* -------------- login page -------------- */

body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 40px;
    width: 100%;
    max-width: 360px;
}
.login-box h1 {
    font-size: 22px;
    margin: 0 0 24px;
}
.login-box form label {
    margin-bottom: 16px;
}
.login-box form button {
    width: 100%;
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
    padding: 12px;
    font-weight: 600;
    margin-top: 8px;
}
.login-box form button:hover { background: var(--accent-hi); }
.login-box .error {
    color: var(--danger);
    background: rgba(201, 97, 94, 0.1);
    border-left: 3px solid var(--danger);
    padding: 8px 12px;
    margin: 0 0 16px;
    font-size: 14px;
}

/* -------------- responsive -------------- */

@media (max-width: 640px) {
    header { padding: 10px 12px; flex-wrap: wrap; gap: 8px; }
    header nav { flex-wrap: wrap; }
    main { padding: 20px 12px 60px; }
    .grid-3 { grid-template-columns: 1fr; }
    .menu-editor .menu-columns { grid-template-columns: 1fr; }
    table.pricing { font-size: 13px; }
    table.pricing th, table.pricing td { padding: 6px 8px; }
    .editor-row.inline {
        grid-template-columns: 1fr;
    }
    .editor-row.inline form { display: block; }
}