/* NetWatch — Apple HIG–inspired design system.
   Semantic color tokens follow Apple's system palette (systemBlue,
   systemGreen, systemRed, label/secondaryLabel, separator), each with a
   light and dark variant, matched to the OS via prefers-color-scheme. */

:root {
    --color-bg: #f2f2f7;
    --color-bg-elevated: #ffffff;
    --color-label: #1d1d1f;
    --color-label-secondary: rgba(60, 60, 67, 0.6);
    --color-label-tertiary: rgba(60, 60, 67, 0.4);
    --color-separator: rgba(60, 60, 67, 0.22);

    --color-accent: #007aff;
    --color-accent-fg: #ffffff;

    --color-success: #248a3d;
    --color-success-bg: rgba(52, 199, 89, 0.15);
    --color-danger: #d70015;
    --color-danger-bg: rgba(255, 59, 48, 0.13);
    --color-neutral: #6e6e73;
    --color-neutral-bg: rgba(142, 142, 147, 0.16);

    --input-bg: #ffffff;
    --input-border: rgba(60, 60, 67, 0.29);

    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
    --radius-card: 14px;
    --radius-control: 10px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #000000;
        --color-bg-elevated: #1c1c1e;
        --color-label: #f5f5f7;
        --color-label-secondary: rgba(235, 235, 245, 0.6);
        --color-label-tertiary: rgba(235, 235, 245, 0.4);
        --color-separator: rgba(84, 84, 88, 0.6);

        --color-accent: #0a84ff;
        --color-accent-fg: #ffffff;

        --color-success: #32d74b;
        --color-success-bg: rgba(48, 209, 88, 0.18);
        --color-danger: #ff453a;
        --color-danger-bg: rgba(255, 69, 58, 0.18);
        --color-neutral: #98989d;
        --color-neutral-bg: rgba(152, 152, 157, 0.18);

        --input-bg: #2c2c2e;
        --input-border: rgba(84, 84, 88, 0.65);

        --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    }
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    color: var(--color-label);
    background: var(--color-bg);
    margin: 0;
}

/* ---------- Dashboard layout ---------- */

.page {
    max-width: 680px;
    margin: 0 auto;
    padding: 48px 20px 80px;
}

.page-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 32px;
}

.page-title {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.021em;
    margin: 0;
}

.logout-link {
    font-size: 15px;
    color: var(--color-accent);
    text-decoration: none;
}

.logout-link:hover { text-decoration: underline; }

.header-links { display: flex; gap: 16px; }

.section {
    margin-top: 32px;
}

.section-header {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-label-secondary);
    margin: 0 0 8px 4px;
}

.card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.card-body {
    padding: 20px;
    display: grid;
    gap: 12px;
}

/* ---------- Host list (grouped-list style) ---------- */

.host-list { list-style: none; margin: 0; padding: 0; }

.host-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 0.5px solid var(--color-separator);
}

.host-row:last-child { border-bottom: none; }

.host-identity { flex: 1; min-width: 0; }

.host-name {
    font-size: 15px;
    font-weight: 590;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.host-address {
    font-size: 13px;
    color: var(--color-label-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.host-meta {
    text-align: right;
    font-size: 13px;
    color: var(--color-label-secondary);
    white-space: nowrap;
}

.host-name.placeholder, .host-address.placeholder {
    color: var(--color-label-tertiary);
    font-style: italic;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

.status-dot.up { background: var(--color-success); }
.status-dot.down { background: var(--color-danger); }
.status-dot.unknown { background: var(--color-neutral); }

.status-label {
    font-size: 14px;
    font-weight: 500;
    vertical-align: middle;
}

.status-label.up { color: var(--color-success); }
.status-label.down { color: var(--color-danger); }
.status-label.unknown { color: var(--color-neutral); }

.remove-btn {
    background: none;
    border: none;
    color: var(--color-danger);
    font-size: 13px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
}

.remove-btn:hover { background: var(--color-danger-bg); }

.text-btn {
    background: none;
    border: none;
    color: var(--color-accent);
    font-size: 13px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
}

.text-btn:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }

.empty-state {
    padding: 32px 20px;
    text-align: center;
    color: var(--color-label-tertiary);
    font-size: 14px;
}

.host-edit-row {
    padding: 16px 20px;
    background: color-mix(in srgb, var(--color-label) 3%, transparent);
    border-bottom: 0.5px solid var(--color-separator);
}

.host-edit-row:last-child { border-bottom: none; }

.host-edit-row .card-body { padding: 0; }

.edit-actions { display: flex; gap: 8px; }

.btn-secondary {
    font: inherit;
    font-size: 15px;
    font-weight: 590;
    padding: 11px 16px;
    color: var(--color-label);
    background: var(--color-neutral-bg);
    border: none;
    border-radius: var(--radius-control);
    cursor: pointer;
}

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

/* ---------- Forms ---------- */

.field { display: grid; gap: 6px; }

.field label {
    font-size: 13px;
    font-weight: 590;
    color: var(--color-label-secondary);
}

.field-status {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-neutral);
    margin-left: 6px;
}

.field-status.set { color: var(--color-success); }

input, textarea {
    font: inherit;
    font-size: 15px;
    padding: 10px 12px;
    color: var(--color-label);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-control);
    width: 100%;
    transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

textarea {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 13px;
    resize: vertical;
    min-height: 72px;
}

input::placeholder, textarea::placeholder { color: var(--color-label-tertiary); }

input:focus, textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 25%, transparent);
}

.template-hint {
    font-size: 12px;
    color: var(--color-label-tertiary);
    margin: -2px 0 2px;
}

.template-hint code {
    background: var(--color-neutral-bg);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 11px;
}

/* Base rule targets every <button> (regardless of type=), not just
   type="submit" - a plain <button type="button"> with no override class
   previously fell through to the unstyled native browser button. The
   semantic classes below (.text-btn, .remove-btn, .btn-secondary) win on
   specificity automatically, so this is safe to apply broadly. */
button, .btn-primary {
    font: inherit;
    font-size: 15px;
    font-weight: 590;
    padding: 11px 16px;
    color: var(--color-accent-fg);
    background: var(--color-accent);
    border: none;
    border-radius: var(--radius-control);
    cursor: pointer;
    transition: opacity 0.15s ease;
}

button:hover, .btn-primary:hover { opacity: 0.88; }
button:active, .btn-primary:active { opacity: 0.75; }

.save-note {
    font-size: 12px;
    color: var(--color-label-tertiary);
    margin: 0 0 4px;
}

/* ---------- Login page ---------- */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 340px;
    background: var(--color-bg-elevated);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 32px 28px;
    display: grid;
    gap: 16px;
}

.login-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
    text-align: center;
    margin: 0 0 4px;
}

.login-error {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    padding: 10px 12px;
    border-radius: var(--radius-control);
    font-size: 13px;
    text-align: center;
}

.login-hint {
    font-size: 12px;
    color: var(--color-label-tertiary);
    text-align: center;
    margin: 4px 0 0;
}

/* ---------- Test ICMP overlay ---------- */

.overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.overlay-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.overlay-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 80vh;
    overflow-y: auto;
}

.overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}

.overlay-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
}

.overlay-card form.field {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: end;
    margin: 12px 0;
}

.overlay-card form.field label {
    grid-column: 1 / -1;
}

.ping-test-results {
    max-height: 240px;
    overflow-y: auto;
    background: var(--color-bg);
    border-radius: var(--radius-control);
    padding: 10px 12px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 13px;
}

.ping-test-line { white-space: pre; }
.ping-test-ok { color: var(--color-success); }
.ping-test-fail { color: var(--color-danger); }

.ping-test-summary-line {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 0.5px solid var(--color-separator);
    font-weight: 590;
    color: var(--color-label);
}