/* 1. Variables - Matching your new Design System */
:root {
    --primary: #1e3a8a;       /* Deep Navy */
    --secondary: #3b82f6;     /* Action Blue */
    --success: #059669;       /* Emerald Green */
    --text-dark: #0f172a;     /* Slate Dark */
    --text-body: #1e293b;     /* Slate Body */
    --bg-soft: #f8fafc;       /* Off-White */
    --wa-green: #25D366;      /* WhatsApp Brand */
    --border: #e2e8f0;
}

/* 2. Global Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-body);
    line-height: 1.6;
    background: #ffffff;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 3. Header Styling */
header {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 100;
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--primary);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-body);
    margin-left: 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--secondary);
}

/* 4. Shared Component: Cards */
.card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    width: 100%;
}

/* 5. Shared Component: Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 6px; /* Professional square-round, not pill */
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--secondary);
    transform: translateY(-2px);
}

.btn-wa {
    background: var(--wa-green);
    color: white;
}

.btn-wa:hover {
    filter: brightness(1.05);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(34, 197, 94, 0.3);
}

/* 6. Form Styling */
label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 0.9rem;
}

input, select, textarea {
    width: 100%;
    padding: 0.9rem;
    margin-bottom: 1.5rem;
    border-radius: 6px;
    border: 1px solid #cbd5e1;
    font-family: inherit;
    font-size: 1rem;
    background: var(--bg-soft);
}

input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--secondary);
    background: #fff;
}

/* 7. Footer (The Dark Branding) */
footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.social-container {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    fill: #cbd5e1;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--secondary);
    fill: #fff;
    transform: translateY(-4px);
}

/* 8. Responsive Design */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Or replace with a mobile menu icon */
    h1 { font-size: 2.2rem; }
}