:root {
    --brand: #2563eb;
    --brand-dark: #1d4ed8;
    --ink: #0f172a;
    --muted: #64748b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
    --success: #16a34a;
    --danger: #dc2626;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
}
.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header { border-bottom: 1px solid var(--border); position: sticky; top: 0; background: #fff; z-index: 10; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; position: relative; }
.logo { font-weight: 800; font-size: 22px; color: var(--ink); }
.logo span { color: var(--brand); }
.nav nav { display: flex; gap: 20px; flex: 1; justify-content: center; }
.nav nav a { color: var(--ink); font-weight: 500; font-size: 14px; }
.nav-actions { display: flex; gap: 10px; flex-shrink: 0; }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .15s ease, opacity .15s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 14px; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-alt); text-decoration: none; }
.btn-block { display: block; width: 100%; text-align: center; }

.hero { background: linear-gradient(180deg, var(--bg-alt), #fff); padding: 72px 0; text-align: center; }
.hero h1 { font-size: 42px; margin: 0 0 16px; }
.hero p { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0 auto 28px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; }

.domain-search { max-width: 560px; margin: 32px auto 0; display: flex; gap: 8px; }
.domain-search input { flex: 1; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; }

section { padding: 64px 0; }
section h2 { font-size: 28px; text-align: center; margin-bottom: 8px; }
section .lead { text-align: center; color: var(--muted); margin-bottom: 40px; }

.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card { border: 1px solid var(--border); border-radius: 12px; padding: 28px; background: #fff; }
.card h3 { margin-top: 0; }

.pricing-card { text-align: center; position: relative; }
.pricing-card.featured { border-color: var(--brand); box-shadow: 0 8px 24px rgba(37,99,235,.12); }
.pricing-card .price { font-size: 34px; font-weight: 800; margin: 12px 0; }
.pricing-card .price small { font-size: 14px; font-weight: 500; color: var(--muted); }
.pricing-card ul { list-style: none; padding: 0; margin: 20px 0; text-align: left; }
.pricing-card ul li { padding: 6px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--brand); color: #fff; font-size: 12px; padding: 4px 10px; border-radius: 999px; }

.bg-alt { background: var(--bg-alt); }

.site-footer { background: var(--ink); color: #cbd5e1; padding: 48px 0 16px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.footer-grid h4 { color: #fff; margin: 0 0 12px; font-size: 14px; }
.footer-grid a { display: block; color: #cbd5e1; font-size: 14px; margin-bottom: 8px; }
.footer-grid .logo { color: #fff; }
.copyright { text-align: center; color: #64748b; font-size: 13px; margin-top: 32px; }

.alert { padding: 12px 0; font-size: 14px; }
.alert-error { background: #fef2f2; color: var(--danger); }
.alert-success { background: #f0fdf4; color: var(--success); }

.auth-wrap { max-width: 420px; margin: 60px auto; padding: 0 20px; }
.auth-card { border: 1px solid var(--border); border-radius: 12px; padding: 32px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}

.app-wrapper { display: flex; flex-direction: column; min-height: 100vh; }
.app-topbar {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 24px;
    padding: 12px 24px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 40;
}
.app-topbar-left { display: flex; align-items: center; gap: 16px; }
.app-topbar .nav-toggle { display: none; }
.app-topbar .logo { color: var(--ink); }

.app-shell { display: flex; flex: 1; min-height: 0; }
/* Admin layout kept its old direct-body structure (only the client dashboard was
   restyled into .app-wrapper) — restore full-viewport height for that case. */
body > .app-shell { min-height: 100vh; }
.sidebar { width: 240px; background: #fff; color: var(--ink); padding: 12px 0; flex-shrink: 0; border-right: 1px solid var(--border); overflow-y: auto; }
.sidebar a { display: flex; align-items: center; gap: 12px; color: var(--muted); padding: 9px 20px; font-size: 14px; font-weight: 500; }
.sidebar a:hover { background: var(--bg-alt); color: var(--ink); text-decoration: none; }
.sidebar a.active { background: #eff6ff; color: var(--brand); text-decoration: none; }
.sidebar a.active .nav-icon { color: var(--brand); }
.sidebar .nav-icon { flex-shrink: 0; color: var(--muted); }
.sidebar a:hover .nav-icon { color: var(--ink); }
.sidebar .logo { padding: 0 20px 16px; display: block; color: var(--ink); }
.nav-group-label { padding: 18px 20px 6px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.nav-group-label:first-of-type { padding-top: 4px; }
.content { flex: 1; padding: 32px; background: var(--bg-alt); min-width: 0; }

.profile-menu { position: relative; }
.profile-trigger { display: flex; align-items: center; gap: 8px; background: none; border: none; cursor: pointer; padding: 4px 6px; border-radius: 8px; color: var(--ink); }
.profile-trigger:hover { background: var(--bg-alt); }
.profile-trigger svg { color: var(--muted); transition: transform .15s ease; }
.profile-trigger[aria-expanded="true"] svg { transform: rotate(180deg); }

.avatar { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; background: var(--brand); color: #fff; font-size: 13px; font-weight: 700; flex-shrink: 0; }
.avatar-lg { width: 40px; height: 40px; font-size: 15px; }
.profile-name { font-size: 14px; font-weight: 600; }

.profile-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 12px 24px rgba(15,23,42,.1);
    overflow: hidden;
    z-index: 30;
}
.profile-dropdown.open { display: block; }
.profile-dropdown-header { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.profile-dropdown-header strong { display: block; font-size: 14px; }
.profile-dropdown-header span { display: block; font-size: 12px; color: var(--muted); word-break: break-all; }
.profile-dropdown a { display: flex; align-items: center; gap: 10px; padding: 10px 16px; font-size: 14px; color: var(--ink); }
.profile-dropdown a:hover { background: var(--bg-alt); text-decoration: none; }
.profile-dropdown .nav-icon { color: var(--muted); flex-shrink: 0; }

.mobile-topbar {
    display: none;
    align-items: center;
    justify-content: space-between;
    background: var(--ink);
    padding: 12px 20px;
    position: sticky;
    top: 0;
    z-index: 40;
}
.mobile-topbar .logo { color: #fff; padding: 0; }
.mobile-topbar .nav-toggle { border-color: rgba(255,255,255,.25); }
.mobile-topbar .nav-toggle span { background: #fff; }

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,.5);
    z-index: 45;
}
.sidebar-backdrop.open { display: block; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.stat-card .value { font-size: 26px; font-weight: 800; }
.stat-card .label { color: var(--muted); font-size: 13px; }

table.data-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
table.data-table th, table.data-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
table.data-table th { background: var(--bg-alt); font-size: 12px; text-transform: uppercase; color: var(--muted); }

.status-pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.status-active { background: #dcfce7; color: #166534; }
.status-pending { background: #fef9c3; color: #854d0e; }
.status-suspended, .status-overdue { background: #fee2e2; color: #991b1b; }

/* Tables scroll horizontally on narrow screens rather than overflow the page */
.data-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 900px) {
    .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stat-grid { grid-template-columns: 1fr 1fr; }

    /* Marketing nav becomes a hamburger-triggered dropdown */
    .nav-toggle { display: flex; }
    .nav nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: #fff;
        border: 1px solid var(--border);
        border-top: none;
        box-shadow: 0 12px 24px rgba(15,23,42,.08);
        z-index: 20;
    }
    .nav nav.open { display: flex; }
    .nav nav a { padding: 14px 20px; border-bottom: 1px solid var(--border); }
    .nav nav a:last-child { border-bottom: none; }

    /* Client/admin app shell becomes an off-canvas sidebar behind a topbar */
    .mobile-topbar { display: flex; }
    .app-topbar .nav-toggle { display: flex; }
    .app-shell { flex-direction: column; }
    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        width: 260px;
        max-width: 82vw;
        transform: translateX(-100%);
        transition: transform .2s ease;
        z-index: 50;
        overflow-y: auto;
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar .logo { display: none; } /* already shown in the mobile topbar (admin only — client sidebar has no inline logo) */
    .content { padding: 20px; }
}

@media (max-width: 560px) {
    .hero { padding: 48px 0; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 16px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .domain-search { flex-direction: column; }

    section { padding: 40px 0; }
    section h2 { font-size: 24px; }

    .footer-grid { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .nav-actions .btn { padding: 8px 12px; font-size: 13px; }
    .auth-wrap { margin: 32px auto; }
    .auth-card { padding: 24px; }
    .profile-name { display: none; }
    .profile-dropdown { right: -12px; }
}