html {
    font-size: 16px;
    position: relative;
    min-height: 100%;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    margin-bottom: 60px;
    background: linear-gradient(180deg, #eaf3fb 0%, #d6e9f8 40%, #c3ddf2 100%);
    background-attachment: fixed;
    color: #1c2b3a;
}

header .navbar {
    background-color: #ffffff !important;
    border-bottom: 1px solid #dbe7f2;
}

.navbar-brand {
    font-weight: 600;
    color: #1a5f9c !important;
    letter-spacing: 0.2px;
}

.container main {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(26, 95, 156, 0.12);
    padding: 2.5rem 2rem;
    margin-top: 1.5rem;
}

h1 {
    color: #14487a;
    font-weight: 700;
}

h2 {
    color: #1a5f9c;
    font-weight: 600;
    font-size: 1.35rem;
}

.btn-primary {
    background-color: #1a5f9c;
    border-color: #1a5f9c;
    font-weight: 600;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    transition: background-color 0.15s ease-in-out;
}

    .btn-primary:hover {
        background-color: #14487a;
        border-color: #14487a;
    }

.form-control {
    border-radius: 8px;
    border: 1px solid #c3d6e6;
    padding: 0.6rem 0.75rem;
}

    .form-control:focus {
        border-color: #1a5f9c;
        box-shadow: 0 0 0 0.2rem rgba(26, 95, 156, 0.2);
    }

.form-label {
    font-weight: 600;
    color: #1c2b3a;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    white-space: nowrap;
    line-height: 60px;
    background-color: #ffffff;
    border-top: 1px solid #dbe7f2;
    color: #5a6b7a;
}