/* Reset & Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
}

/* Header */
header {
    background-color: #0056b3; /* Banking Blue */
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.95rem;
    opacity: 0.9;
    transition: opacity 0.2s;
}

nav a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Main Container */
.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 2rem;
}

.card h2 {
    color: #0056b3;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="url"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input:focus {
    border-color: #0056b3;
    outline: none;
}

button {
    background-color: #d9534f; /* Action Red */
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #c9302c;
}

button.secondary {
    background-color: #0056b3;
}

button.secondary:hover {
    background-color: #004494;
}

/* Login Page Specifics */
.login-container {
    max-width: 400px;
    margin: 5rem auto;
    text-align: center;
}

.login-container h1 {
    color: #0056b3;
    margin-bottom: 2rem;
}

/* Dashboard Specifics */
.balance-display {
    font-size: 2.5rem;
    font-weight: bold;
    color: #28a745; /* Money Green */
    margin: 1rem 0;
}

.welcome-msg {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Flag Box */
.flag-box {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
    padding: 1.5rem;
    margin-top: 2rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 1.2rem;
    text-align: center;
    word-break: break-all;
}

/* Responsive Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}