:root {
    --primary-color: #2c6b96;
    --secondary-color: #78a6c8;
    --accent-color: #e9f2f9;
    --text-color: #2c3e50;
}
body {
    background: linear-gradient(135deg, var(--accent-color) 0%, #ffffff 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
}
.section-card {
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    overflow: hidden;
}
.section-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}
.section-card .card-body {
    padding: 2rem;
}
.section-card .card-title {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}
.section-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}
.section-card:hover .section-icon {
    transform: scale(1.1);
    color: var(--primary-color);
}
.section-card .card-text {
    color: var(--text-color);
    font-size: 1rem;
}
.modal-dialog {
    max-width: 400px;
}
.modal-content {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 15px;
    border: none;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    padding: 1rem;
}
.modal-header {
    border-bottom: 2px solid var(--accent-color);
    padding: 1.5rem;
    text-align: center;
    display: block;
    position: relative;
}
.modal-header .btn-close {
    position: absolute;
    left: 1rem;
    top: 1.5rem;
}
.modal-title {
    color: var(--primary-color);
    font-weight: 600;
    margin: 0;
    font-size: 1.5rem;
}
.login-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}
.selected-section {
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 500;
}
.form-control {
    border: 2px solid #e0e6ed;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(120, 166, 200, 0.25);
}
.btn-primary {
    background-color: var(--primary-color);
    border: none;
    padding: 0.75rem 2rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-1px);
}
.alert {
    border-radius: 8px;
    font-size: 0.9rem;
    border: none;
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.alert i {
    font-size: 1.2rem;
    animation: shake 0.5s ease-in-out;
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}
h1.main-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}