/* ==========================================
   Cendriq Design System — Light Blue SaaS
   ========================================== */

/* Import Inter from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Brand colors */
    --primary: #3b82f6;
    --primary-light: #93c5fd;
    --primary-dark: #1d4ed8;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;

    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Status */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

    /* Transitions */
    --transition: all 0.2s ease;
}

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }

/* ============ CONTAINER ============ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); }
.container-narrow { max-width: 800px; margin: 0 auto; padding: 0 var(--space-lg); }
.container-xs { max-width: 480px; margin: 0 auto; padding: 0 var(--space-lg); }

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4 { font-weight: 600; color: var(--gray-900); line-height: 1.3; }
h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-muted { color: var(--gray-500); }
.text-center { text-align: center; }
.text-white { color: #fff; }

/* ============ NAV ============ */
.nav {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background: rgba(255,255,255,0.95);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-brand {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}
.nav-brand:hover { color: var(--primary-dark); }
.nav-links { display: flex; align-items: center; gap: var(--space-xl); }
.nav-links a { color: var(--gray-600); font-weight: 500; font-size: 0.9rem; }
.nav-links a:hover { color: var(--primary); }

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 1px 3px rgba(59,130,246,0.3);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(59,130,246,0.35);
    transform: translateY(-1px);
}
.btn-secondary {
    background: #fff;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}
.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    color: var(--gray-800);
}
.btn-success {
    background: var(--success);
    color: #fff;
}
.btn-success:hover { background: #059669; color: #fff; }
.btn-danger {
    background: var(--error);
    color: #fff;
}
.btn-danger:hover { background: #dc2626; color: #fff; }
.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.875rem 2rem; font-size: 1rem; }
.btn-full { width: 100%; }

/* ============ CARDS ============ */
.card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--gray-100);
}

/* ============ FORMS ============ */
.form-group { margin-bottom: var(--space-lg); }
.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: var(--space-xs);
}
.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--gray-800);
    background: #fff;
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-100);
}
.form-control::placeholder { color: var(--gray-400); }
select.form-control { appearance: auto; }
.form-help {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: var(--space-xs);
}
.form-error {
    font-size: 0.8rem;
    color: var(--error);
    margin-top: var(--space-xs);
}
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--gray-600);
    cursor: pointer;
}
.checkbox-label input[type="checkbox"] {
    margin-top: 0.2rem;
    accent-color: var(--primary);
}

/* ============ ALERTS ============ */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
}
.alert-success { background: var(--success-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: var(--error-light); color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: var(--info-light); color: #1e40af; border: 1px solid #93c5fd; }

/* ============ HERO ============ */
.hero {
    padding: 6rem 0 5rem;
    background: linear-gradient(135deg, var(--primary-50) 0%, #fff 50%, var(--primary-50) 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-100) 0%, transparent 70%);
    opacity: 0.6;
}
.hero h1 {
    font-size: 3.25rem;
    line-height: 1.15;
    max-width: 700px;
    letter-spacing: -0.03em;
}
.hero p {
    font-size: 1.2rem;
    color: var(--gray-500);
    max-width: 560px;
    margin: var(--space-lg) 0 var(--space-2xl);
}
.hero-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }

/* ============ SECTION ============ */
.section {
    padding: 5rem 0;
}
.section-alt { background: #fff; }
.section-title {
    text-align: center;
    margin-bottom: var(--space-3xl);
}
.section-title h2 { margin-bottom: var(--space-sm); }
.section-title p { color: var(--gray-500); font-size: 1.1rem; }

/* ============ GRID ============ */
.grid { display: grid; gap: var(--space-xl); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============ CONNECTOR CARDS ============ */
.connector-card {
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
}
.connector-card .connector-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: 1.5rem;
    color: var(--primary);
}
.connector-card h3 { font-size: 1.125rem; margin-bottom: var(--space-sm); }
.connector-card p { color: var(--gray-500); font-size: 0.875rem; margin-bottom: var(--space-lg); }
.connector-card .price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}
.connector-card .price span { font-size: 0.9rem; font-weight: 400; color: var(--gray-500); }

/* ============ PRICING ============ */
.pricing-card { position: relative; }
.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary), var(--shadow-lg);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    padding: 0.25rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

/* ============ FEATURES LIST ============ */
.features-list { list-style: none; text-align: left; }
.features-list li {
    padding: var(--space-sm) 0;
    font-size: 0.875rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.features-list li::before {
    content: '✓';
    color: var(--success);
    font-weight: 700;
    font-size: 0.9rem;
}

/* ============ FOOTER ============ */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}
.footer-brand { font-size: 1.25rem; font-weight: 700; color: #fff; margin-bottom: var(--space-md); }
.footer-desc { font-size: 0.875rem; line-height: 1.7; }
.footer h4 { color: var(--gray-200); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-md); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: var(--space-sm); }
.footer-links a { color: var(--gray-400); font-size: 0.875rem; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

/* ============ STATUS BADGES ============ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-success { background: var(--success-light); color: #065f46; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-error { background: var(--error-light); color: #991b1b; }
.badge-info { background: var(--info-light); color: #1e40af; }
.badge-neutral { background: var(--gray-100); color: var(--gray-600); }

/* ============ AUTH PAGES ============ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50), var(--gray-50));
    padding: var(--space-xl);
}
.auth-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: var(--space-2xl) var(--space-2xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 440px;
}
.auth-card h1 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}
.auth-card .auth-subtitle {
    color: var(--gray-500);
    margin-bottom: var(--space-xl);
    font-size: 0.9rem;
}
.auth-card .auth-brand {
    display: block;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-2xl);
}
.auth-footer { text-align: center; margin-top: var(--space-lg); font-size: 0.85rem; color: var(--gray-500); }

/* ============ RESPONSIVE ============ */
@media (max-width: 968px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 2.5rem; }
    .nav-links { gap: var(--space-md); }
}
@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero { padding: 3rem 0; }
    .hero h1 { font-size: 2rem; }
    .section { padding: 3rem 0; }
    .nav-links { display: none; }
    .footer-bottom { flex-direction: column; gap: var(--space-md); }
}