:root {
    /* Primary can be overridden per-client via inline variables on the page */
    --primary-color: #6366F1;           /* indigo-500 */
    --primary-hover: #4F46E5;           /* indigo-600 */

    /* Neutral palette for dark glass */
    --neutral-50: #F8FAFC;
    --neutral-100: #F1F5F9;
    --neutral-200: #E2E8F0;
    --neutral-300: #CBD5E1;
    --neutral-400: #94A3B8;
    --neutral-500: #64748B;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1E293B;
    --neutral-900: #0B1220;

    /* Text and surfaces */
    --text-color: #E2E8F0;              /* light text on dark */
    --text-muted: rgba(226, 232, 240, 0.75);
    --border-color: rgba(255,255,255,0.18);
    --danger-color: #EF4444;
    --background-color: var(--neutral-900);
    --card-bg: rgba(255,255,255,0.08);  /* glass */
    --card-shadow: 0 20px 50px rgba(2, 6, 23, 0.25);

    /* Effects */
    --glass-border: 1px solid rgba(255,255,255,0.35);
    --blur-effect: blur(12px) saturate(140%);
    --gradient-1: linear-gradient(135deg, var(--primary-color) 0%, #06B6D4 100%);
}

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

body {
    font-family: 'Manrope', 'SF Pro Text', Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--background-color);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 0 1rem;
}

.card {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    border: var(--glass-border);
    backdrop-filter: var(--blur-effect);
}

.card-body { padding: 20px; }

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

.header {
    margin-bottom: 2rem;
}

.header h2 { color: var(--neutral-100); font-weight: 700; }

h2 {
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

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

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    padding: 12px 18px;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.6;
    border-radius: 20px;
    transition: all 180ms ease-out;
    width: 100%;
}

.btn-outline {
    color: #FFFFFF;
    background: rgba(255,255,255,0.12);
    border: var(--glass-border);
    backdrop-filter: blur(10px) saturate(140%);
    box-shadow: 0 6px 16px rgba(2, 6, 23, 0.12);
}

.btn-outline:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(2, 6, 23, 0.18);
}

.btn-primary {
    color: #FFFFFF;
    background: var(--gradient-1);
    border: var(--glass-border);
    box-shadow: 0 12px 30px rgba(99,102,241,0.35);
    backdrop-filter: var(--blur-effect);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 40px rgba(99,102,241,0.45);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.footer {
    margin-top: 1.5rem;
    text-align: center;
}

.footer a { color: var(--neutral-100); text-decoration: none; }
.footer a:hover {
    text-decoration: underline;
}

.logo-container {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.client-logo {
    max-width: 150px;
    max-height: 80px;
}

.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

.alert-danger { color: #FCA5A5; background-color: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.7); }