:root {
    --bg-color: #f4f7f6;
    --nav-bg: #1a1a2e;
    --text-color: #333;
    --primary-btn: #0f3460;
    --primary-hover: #e94560;
}

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

/* Navbar Styling */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--nav-bg);
    padding: 15px 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 1px;
}

.account-btn {
    color: white;
    transition: color 0.3s ease;
}

.account-btn:hover {
    color: var(--primary-hover);
}

/* Main Container */
.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-top: 50px;
}

/* Login Card */
.login-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    max-width: 400px;
    margin: 0 auto;
}

.login-card h2 {
    margin-top: 0;
    text-align: center;
    color: var(--nav-bg);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background-color: var(--primary-btn);
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.w-100 {
    width: 100%;
}

.register-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
}