* {
    box-sizing: border-box;
}
:root {
    --bg: #0b1220;
    --bg-2: #111a2e;
    --panel: #131c33;
    --panel-2: #182240;
    --border: #25325a;
    --text: #e6ecff;
    --muted: #8a96b8;
    --primary: #4f8cff;
    --primary-2: #3a76e6;
    --danger: #ff5d6c;
    --danger-2: #e0455a;
    --ok: #2bd29b;
    --warn: #ffb547;
    --bad: #ff5d6c;
    --info: #4f8cff;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}
html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family:
        ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}
a {
    color: var(--primary);
}
code {
    background: rgba(255, 255, 255, 0.06);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}
.muted {
    color: var(--muted);
}
.small {
    font-size: 0.85em;
}

/* Auth */
.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: radial-gradient(1200px 600px at 20% 0%, #1a2c5c, transparent),
        radial-gradient(900px 500px at 90% 100%, #2a1a5c, transparent), var(--bg);
    padding: 24px;
}
.auth-card {
    width: 100%;
    max-width: 380px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px 24px;
    box-shadow: var(--shadow);
}
.brand {
    text-align: center;
    margin-bottom: 22px;
}
.brand h1 {
    margin: 8px 0 2px;
    font-size: 22px;
    letter-spacing: 0.2px;
}
.brand .subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}
.lock-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: linear-gradient(135deg, #4f8cff, #7d4fff);
    display: inline-grid;
    place-items: center;
    color: white;
    margin-bottom: 8px;
}
.lock-icon svg {
    width: 22px;
    height: 22px;
}
form label {
    display: block;
    margin-bottom: 12px;
}
form label > span {
    display: block;
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    background: var(--bg-2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 10px;
    padding: 11px 12px;
    font-size: 14px;
    outline: none;
    transition:
        border 0.15s,
        box-shadow 0.15s;
}
input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.18);
}
.btn {
    appearance: none;
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 14px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    transition:
        background 0.15s,
        transform 0.05s,
        opacity 0.15s;
}
.btn:active {
    transform: translateY(1px);
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.btn-primary {
    background: var(--primary);
    color: white;
    width: 100%;
}
.btn-primary:hover {
    background: var(--primary-2);
}
.btn-ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}
.btn-ghost:hover {
    background: var(--panel-2);
}
.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover {
    background: var(--danger-2);
}
.btn-sm {
    padding: 6px 10px;
    font-size: 13px;
}
.error {
    margin-top: 10px;
    color: var(--danger);
    font-size: 13px;
    background: rgba(255, 93, 108, 0.1);
    border: 1px solid rgba(255, 93, 108, 0.3);
    padding: 8px 10px;
    border-radius: 8px;
}

/* Topbar */
.topbar {
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar-inner {
    max-width: 980px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.topbar-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
}
.topbar-brand strong {
    color: var(--text);
}
.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Container */
.container {
    max-width: 980px;
    margin: 24px auto 60px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.banner {
    border-radius: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    background: var(--panel);
    font-size: 14px;
}
.banner-warn {
    background: rgba(255, 181, 71, 0.08);
    border-color: rgba(255, 181, 71, 0.3);
    color: #ffd791;
}
.banner-ok {
    background: rgba(43, 210, 155, 0.08);
    border-color: rgba(43, 210, 155, 0.3);
    color: #aef0d3;
}
.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 18px;
    box-shadow: var(--shadow);
}
.panel-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}
.panel-header h2 {
    margin: 0 0 2px;
    font-size: 16px;
    letter-spacing: 0.2px;
}
.panel-header p {
    margin: 0;
    font-size: 13px;
}

/* Mode tabs */
.mode-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.mode-tab {
    flex: 1 1 220px;
    margin: 0;
    cursor: pointer;
}
.mode-tab input {
    display: none;
}
.mode-tab span {
    display: block;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    background: var(--panel-2);
    transition: border 0.15s, background 0.15s;
}
.mode-tab span strong {
    display: block;
    font-size: 14px;
    color: var(--text);
    margin-bottom: 2px;
    text-transform: none;
    letter-spacing: 0;
}
.mode-tab span small {
    color: var(--muted);
    font-size: 12px;
}
.mode-tab input:checked + span {
    border-color: var(--primary);
    background: rgba(79, 140, 255, 0.08);
    box-shadow: 0 0 0 2px rgba(79, 140, 255, 0.18);
}

/* DNS wizard */
.dns-wizard {
    margin-top: 6px;
    padding: 14px;
    border: 1px dashed var(--border);
    border-radius: 12px;
    background: rgba(79, 140, 255, 0.04);
}
.dns-wizard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.dns-wizard-header strong {
    font-size: 14px;
}
#dnsWizardMsg {
    margin: 0 0 12px;
    font-size: 13px;
}
.dns-challenge {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    margin-bottom: 10px;
}
.dns-challenge-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin: 4px 0;
}
.dns-label {
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    min-width: 86px;
}
.dns-challenge code {
    flex: 1 1 200px;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 13px;
    cursor: text;
    user-select: all;
}
.dns-challenge code.break {
    word-break: break-all;
    font-size: 12px;
}

/* Add form */
.add-form .row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.add-form .grow {
    flex: 1 1 220px;
    min-width: 0;
}
.check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 8px 0 12px;
    font-size: 14px;
}
.check input {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
}
.output {
    margin-top: 12px;
    background: #0a1024;
    border: 1px solid var(--border);
    color: #c8d3f0;
    padding: 10px;
    border-radius: 10px;
    font-size: 12px;
    max-height: 220px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Cert cards */
.certs-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.cert-card {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
}
.cert-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.cert-head h3 {
    margin: 0;
    font-size: 15px;
    word-break: break-all;
}
.cert-actions {
    display: flex;
    gap: 8px;
}
.cert-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 13px;
}
.cert-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}
.label {
    color: var(--muted);
    font-size: 12px;
    min-width: 100px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.path {
    word-break: break-all;
    font-size: 12px;
}
.empty {
    text-align: center;
    color: var(--muted);
    padding: 28px 10px;
    border: 1px dashed var(--border);
    border-radius: 10px;
}
.badge {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.2px;
}
.badge-good {
    background: rgba(43, 210, 155, 0.15);
    color: #5be3b6;
}
.badge-warn {
    background: rgba(255, 181, 71, 0.15);
    color: #ffc875;
}
.badge-bad {
    background: rgba(255, 93, 108, 0.15);
    color: #ff8e99;
}
.badge-info {
    background: rgba(79, 140, 255, 0.15);
    color: #8db5ff;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 14px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    z-index: 50;
    font-size: 14px;
    max-width: 90vw;
}
.toast-ok {
    border-color: rgba(43, 210, 155, 0.5);
}
.toast-error {
    border-color: rgba(255, 93, 108, 0.5);
}

/* Spinner */
.spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}