:root {
    color-scheme: light;
    --bg: #f3f4f6;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --text: #1f2937;
    --muted: #6b7280;
    --line: #d1d5db;
    --primary: #1f4e79;
    --primary-dark: #173b5d;
    --success-bg: #ecfdf3;
    --success-text: #166534;
    --danger-bg: #fef2f2;
    --danger-text: #991b1b;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1160px, calc(100% - 2rem));
    margin: 0 auto;
}

.topbar-wrap {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.topbar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.25rem;
    align-items: center;
    min-height: 68px;
    padding: 0.75rem 0;
}

.brand {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.topnav-links {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.nav-link {
    padding: 0.5rem 0.85rem;
    border: 1px solid transparent;
    border-radius: 0.4rem;
    color: #334155;
    font-weight: 500;
}

.nav-link:hover {
    background: var(--surface-soft);
    border-color: var(--line);
}

.nav-link.is-active {
    color: var(--primary);
    border-color: #9fb4c9;
    background: #eef4fa;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.4rem;
    padding: 0.55rem 0.95rem;
    border: 1px solid transparent;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-outline {
    background: #fff;
    border-color: var(--line);
    color: var(--text);
}

.btn-outline:hover {
    background: #f9fafb;
}

.page {
    padding: 2rem 0;
}

.hero {
    background: linear-gradient(160deg, #fdfefe 0%, #eef4fa 100%);
    border: 1px solid #cfd8e3;
    border-radius: 0.6rem;
    padding: 2rem;
}

.hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin: 0;
}

.hero p {
    color: var(--muted);
    max-width: 760px;
}

.feature-grid {
    margin-top: 1.25rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 0.55rem;
}

.panel-body {
    padding: 1rem 1.1rem;
}

.panel h2,
.panel h3 {
    margin-top: 0;
}

.muted {
    color: var(--muted);
}

.dashboard-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 1rem;
}

.menu {
    position: sticky;
    top: 92px;
    align-self: start;
}

.menu .panel-body {
    display: grid;
    gap: 0.55rem;
}

.menu-link {
    border: 1px solid var(--line);
    border-radius: 0.45rem;
    padding: 0.6rem 0.75rem;
    background: #fff;
    font-weight: 500;
}

.menu-link:hover {
    background: #f8fafc;
}

.content-stack {
    display: grid;
    gap: 1rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.8rem;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 0.55rem;
    padding: 0.9rem;
}

.stat-label {
    color: var(--muted);
    font-size: 0.86rem;
}

.stat-value {
    font-size: 1.55rem;
    margin-top: 0.2rem;
    font-weight: 700;
}

.split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.65rem;
}

.list-item {
    border: 1px solid var(--line);
    border-radius: 0.45rem;
    background: var(--surface-soft);
    padding: 0.75rem;
}

.row {
    display: flex;
    justify-content: space-between;
    gap: 0.6rem;
    align-items: center;
}

.form-wrap {
    max-width: 540px;
    margin: 1rem auto 0;
}

.form-grid {
    display: grid;
    gap: 0.85rem;
}

label {
    font-size: 0.93rem;
    font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="number"],
input[type="search"],
input[type="tel"],
textarea {
    width: 100%;
    border: 1px solid #b6c2d0;
    background: #fff;
    border-radius: 0.4rem;
    padding: 0.7rem 0.8rem;
    font: inherit;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
textarea:focus {
    outline: none;
    border-color: #6b8fb0;
    box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.14);
}

/* Auth pages */
.auth-page {
    min-height: calc(100vh - 68px);
    display: flex;
    align-items: center;
    padding: 2.5rem 0;
    background:
        radial-gradient(circle at 14% 18%, rgba(31, 78, 121, 0.1), transparent 38%),
        radial-gradient(circle at 88% 84%, rgba(23, 59, 93, 0.08), transparent 42%),
        linear-gradient(180deg, #f7fafd 0%, #eef3f8 100%);
}

.auth-wrap {
    max-width: 480px;
    width: 100%;
}

.auth-card {
    border-color: #c7d3df;
    border-radius: 0.75rem;
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.08);
}

.auth-card-body {
    padding: 1.4rem 1.35rem;
}

.auth-title {
    margin: 0;
    font-size: clamp(1.85rem, 2.5vw, 2.15rem);
    letter-spacing: 0.01em;
}

.auth-subtitle {
    margin: 0.55rem 0 1rem 0;
}

.auth-alert {
    margin-top: 0.9rem;
}

.auth-form {
    margin-top: 0.8rem;
}

.auth-remember {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    width: fit-content;
    font-weight: 500;
    color: #334155;
    user-select: none;
}

.auth-remember input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    margin: 0;
    accent-color: var(--primary);
}

.auth-footer {
    margin-top: 1rem;
}

.auth-register-link {
    color: var(--primary);
    font-weight: 600;
}

.auth-register-link:hover {
    text-decoration: underline;
}

.alert-success,
.alert-error {
    border-radius: 0.45rem;
    border: 1px solid;
    padding: 0.75rem 0.9rem;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: #86efac;
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger-text);
    border-color: #fca5a5;
}

.status-pill {
    display: inline-block;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.2rem 0.6rem;
    font-size: 0.78rem;
    color: #334155;
    background: #f8fafc;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

.module-card {
    display: block;
    border: 1px solid var(--line);
    border-radius: 0.5rem;
    background: #fff;
    padding: 0.85rem;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.module-card h4 {
    margin: 0 0 0.35rem 0;
}

.module-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.module-card:hover {
    border-color: #9fb4c9;
    background: #f8fbff;
}

.module-card.is-disabled {
    background: #f3f4f6;
    opacity: 0.72;
    cursor: not-allowed;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.preset-btn {
    text-align: left;
}

.chat-response {
    margin: 0;
    background: #f8fafc;
    border: 1px solid var(--line);
    border-radius: 0.45rem;
    padding: 0.85rem;
    white-space: pre-wrap;
    font: inherit;
    color: var(--text);
}

.panel-disabled {
    background: #f3f4f6;
    border-color: #d1d5db;
    opacity: 0.78;
}

/* =====================
   APP SHELL – authenticated layout
   ===================== */

.app-topbar-wrap {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
    height: 54px;
}

.app-topbar {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 1.25rem;
    gap: 0.15rem;
}

.app-topbar-spacer {
    flex: 1;
}

.app-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.48rem 0.9rem;
    border-radius: 0.4rem;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.92rem;
    background: none;
    cursor: pointer;
    color: var(--text);
    text-decoration: none;
    line-height: 1;
}

.app-nav-btn:hover {
    background: var(--surface-soft);
    border-color: var(--line);
}

.app-nav-btn.is-active {
    background: #eef4fa;
    border-color: #9fb4c9;
    color: var(--primary);
}

.app-nav-btn-logout {
    color: var(--muted);
    padding-left: 1rem;
    margin-left: 0.5rem;
    border-left: 1px solid var(--line) !important;
    border-radius: 0 !important;
    border-color: transparent;
}

.app-nav-btn-logout:hover {
    background: none !important;
    color: var(--text);
    border-color: transparent !important;
    border-left-color: var(--line) !important;
}

.app-shell {
    display: grid;
    grid-template-columns: 210px 1fr;
    min-height: calc(100vh - 54px);
}

.app-sidebar {
    border-right: 1px solid var(--line);
    background: var(--surface);
    padding: 1rem 0.65rem;
    position: sticky;
    top: 54px;
    height: calc(100vh - 54px);
    overflow-y: auto;
}

.sidebar-heading {
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--muted);
    padding: 0.7rem 0.75rem 0.3rem;
}

.sidebar-divider {
    border-top: 1px solid var(--line);
    margin: 0.65rem 0.5rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.56rem 0.75rem;
    border-radius: 0.4rem;
    border: 1px solid transparent;
    font-weight: 500;
    font-size: 0.93rem;
    margin-bottom: 0.18rem;
    color: var(--text);
    text-decoration: none;
}

.sidebar-link:hover {
    background: var(--surface-soft);
    border-color: var(--line);
}

.sidebar-link.is-active {
    background: #eef4fa;
    border-color: #9fb4c9;
    color: var(--primary);
    font-weight: 600;
}

.sidebar-link.is-disabled {
    color: var(--muted);
    opacity: 0.65;
    cursor: not-allowed;
    pointer-events: none;
}

.wip-badge {
    font-size: 0.67rem;
    font-weight: 700;
    background: #e5e7eb;
    border-radius: 3px;
    padding: 0.12rem 0.38rem;
    color: #9ca3af;
    flex-shrink: 0;
}

.app-content {
    padding: 1.75rem 2rem;
    min-width: 0;
    background: var(--bg);
}

.page-title {
    margin: 0 0 0.35rem;
    font-size: 1.55rem;
    font-weight: 700;
}

/* Providers grid (settings/social) */
.providers-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    align-items: start;
}

.pricing-card .panel-body {
    display: grid;
    gap: 0.75rem;
}

.pricing-card-featured {
    border-color: #9fb4c9;
    background: #f8fbff;
}

.pricing-badge {
    display: inline-block;
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 3px;
    padding: 0.15rem 0.5rem;
    background: #e5e7eb;
    color: #6b7280;
}

.pricing-badge.current {
    background: #dcfce7;
    color: #166534;
}

.pricing-price {
    font-size: 1.6rem;
    font-weight: 700;
}

.pricing-features {
    margin: 0;
    padding-left: 1.1rem;
    display: grid;
    gap: 0.35rem;
    color: var(--muted);
    font-size: 0.93rem;
}

@media (max-width: 1000px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .app-sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--line);
        display: flex;
        flex-wrap: wrap;
        gap: 0.35rem;
        padding: 0.75rem;
    }

    .sidebar-heading,
    .sidebar-divider {
        display: none;
    }

    .sidebar-link {
        margin-bottom: 0;
    }

    .dashboard-shell {
        grid-template-columns: 1fr;
    }

    .menu {
        position: static;
    }

    .split,
    .feature-grid,
    .stats,
    .modules-grid,
    .providers-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .topbar {
        grid-template-columns: 1fr;
        gap: 0.7rem;
    }

    .auth-page {
        min-height: auto;
        padding: 1.25rem 0 2rem;
    }
}