:root {
    --bank-blue: #0a2540;
    --secure-green: #00d084;
    --alert-red: #e63946;
    --bg-grey: #f6f9fc;
    --text-dark: #32325d;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-grey);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
}

header {
    background-color: var(--bank-blue);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.secure-badge {
    background: rgba(255,255,255,0.1);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.secure-badge::before {
    content: "🔒";
    font-size: 0.8rem;
}

main {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
}

.welcome-banner {
    margin-bottom: 30px;
}

.welcome-banner h1 {
    font-size: 2rem;
    margin: 0 0 10px 0;
    color: var(--bank-blue);
}

.last-login {
    font-size: 0.9rem;
    color: #666;
}

/* ACCOUNT GRID */
.account-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.account-card {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    border-left: 5px solid var(--bank-blue);
    transition: transform 0.2s ease;
}

.account-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    color: #8898aa;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.balance {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bank-blue);
    margin: 10px 0;
}

.account-number {
    font-family: monospace;
    font-size: 1.1rem;
    color: #555;
    background: #f0f2f5;
    padding: 5px 10px;
    border-radius: 4px;
    display: inline-block;
}

/* Loading State */
#loading-indicator {
    text-align: center;
    padding: 40px;
    color: #8898aa;
}