body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.sidebar {
    background: linear-gradient(135deg, #c41e3a, #ff6b35);
    min-height: 100vh;
    color: white;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 15px 20px;
    border-radius: 0;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.brand-logo {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.package-card {
    border: 2px solid #e9ecef;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.package-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.package-card.selected {
    border-color: #c41e3a;
    background: linear-gradient(135deg, #fff5f5, #ffe8e8);
    box-shadow: 0 8px 25px rgba(196, 30, 58, 0.2);
}

.package-card .card-header {
    background: linear-gradient(135deg, #c41e3a, #ff6b35);
    color: white;
    border-radius: 8px 8px 0 0 !important;
    text-align: center;
    padding: 20px;
}

.package-card.selected .card-header {
    background: linear-gradient(135deg, #a01729, #e55a2b);
}

.price-tag {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.price-period {
    font-size: 0.9rem;
    opacity: 0.9;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 8px 0;
    border-bottom: 1px solid #f1f3f4;
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list i {
    color: #28a745;
    margin-right: 10px;
    width: 16px;
}

.main-content {
    padding: 30px;
}

.page-header {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.selected-package-info {
    background: linear-gradient(135deg, #c41e3a, #ff6b35);
    color: white;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: none;
}

/* Beautiful button styles */
.btn-proceed {
    background: linear-gradient(135deg, #28a745, #20c997);
    border: none;
    color: white;
    border-radius: 25px;
    padding: 8px 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-proceed:hover:not(:disabled) {
    background: linear-gradient(135deg, #218838, #1e7e34);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
    color: white;
}

.btn-proceed:active:not(:disabled) {
    transform: translateY(0);
}

.btn-proceed:disabled {
    background: linear-gradient(135deg, #6c757d, #868e96);
    box-shadow: 0 2px 8px rgba(108, 117, 125, 0.2);
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-clear {
    background: linear-gradient(135deg, #6c757d, #868e96);
    border: none;
    color: white;
    border-radius: 25px;
    padding: 8px 18px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.btn-clear:hover {
    background: linear-gradient(135deg, #dc3545, #c82333);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
    color: white;
}

.btn-clear:active {
    transform: translateY(0);
}

/* Icon animations */
.btn-proceed i {
    transition: transform 0.3s ease;
}

.btn-proceed:hover:not(:disabled) i {
    transform: translateX(3px);
}

.btn-clear i {
    transition: transform 0.3s ease;
}

.btn-clear:hover i {
    transform: rotate(90deg);
}

/* Ripple effect */
.btn-proceed::before,
.btn-clear::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn-proceed:active:not(:disabled)::before,
.btn-clear:active::before {
    width: 100px;
    height: 100px;
}