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

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    --bg: #f3f4f6;
    --surface: #ffffff;
    --border: #e5e7eb;
    --text: #111827;
    --text-secondary: #6b7280;
    --success: #059669;
    --success-bg: #d1fae5;
    --warning: #d97706;
    --warning-bg: #fef3c7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, monospace;
}

html {
    font-size: 15px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100dvh;
}

.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Header */

header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo-sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-email {
    font-size: 0.85rem;
    color: var(--text-secondary);
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-error {
    color: #dc2626;
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    margin: 0.75rem 0;
}

/* Page */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 2rem 0 1.25rem;
}

.page-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* Cards */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.card + .card {
    margin-top: 0.75rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.75rem;
}

.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: box-shadow 0.15s, border-color 0.15s;
}

.card-link:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

/* Badges */

.badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-pending {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-connected {
    background: var(--success-bg);
    color: var(--success);
}

.badge-disconnected {
    background: var(--danger-bg);
    color: var(--danger);
}

/* Buttons */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.1rem;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, opacity 0.15s;
    line-height: 1.4;
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border);
}

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

.btn-danger:hover:not(:disabled) {
    background: #fecaca;
}

.btn-sm {
    padding: 0.35rem 0.7rem;
    font-size: 0.78rem;
}

/* Forms */

.form-section {
    margin-bottom: 1.75rem;
}

.form-section-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.form-group.full {
    grid-column: 1 / -1;
}

label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

input,
select,
textarea {
    font-family: inherit;
    font-size: 0.88rem;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.15s;
    width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

textarea {
    font-family: var(--mono);
    font-size: 0.82rem;
    resize: vertical;
    min-height: 80px;
    line-height: 1.5;
}

/* Endpoint builder */

.endpoint-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-top: 0.75rem;
    background: var(--bg);
    position: relative;
}

.endpoint-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.endpoint-number {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
}

/* Detail page */

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 1rem;
    align-items: start;
}

.info-table {
    width: 100%;
    font-size: 0.88rem;
}

.info-table th {
    text-align: left;
    padding: 0.45rem 1rem 0.45rem 0;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    vertical-align: top;
    width: 140px;
}

.info-table td {
    padding: 0.45rem 0;
    word-break: break-all;
}

.qr-box {
    text-align: center;
}

.qr-box img {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

.qr-placeholder {
    background: var(--bg);
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 2rem 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.endpoint-list {
    margin-top: 1.25rem;
}

.endpoint-item {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
}

.endpoint-item:last-child {
    border-bottom: none;
}

.method-badge {
    font-size: 0.7rem;
    font-weight: 700;
    font-family: var(--mono);
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    background: var(--primary-light);
    color: var(--primary);
    flex-shrink: 0;
}

.endpoint-name {
    font-weight: 600;
}

.endpoint-path {
    color: var(--text-secondary);
    font-family: var(--mono);
    font-size: 0.82rem;
}

/* Empty state */

.empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty h2 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
    color: var(--text);
}

.empty p {
    margin-bottom: 1.25rem;
    font-size: 0.88rem;
}

/* Toast */

.toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    padding: 0.7rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.25s, transform 0.25s;
    pointer-events: none;
    z-index: 100;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background: var(--success);
    color: #fff;
}

.toast.error {
    background: var(--danger);
    color: #fff;
}

/* Loading */

.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2.5px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-center {
    display: flex;
    justify-content: center;
    padding: 3rem;
}

/* Responsive */

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

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

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}