/* Enhancements CSS - Cải tiến giao diện */

/* 1. Hiệu ứng chuyển động mượt mà */
.hover-effect {
    transition: all 0.4s ease;
}

.hover-effect:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn {
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.btn:after {
    content: '';
    position: absolute;
    width: 0;
    height: 100%;
    top: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    z-index: -1;
}

.btn:hover:after {
    width: 100%;
    left: 0;
    right: auto;
}

/* Hiệu ứng ripple cho các nút */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple:after {
    content: "";
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, #fff 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform .5s, opacity 1s;
}

.btn-ripple:active:after {
    transform: scale(0, 0);
    opacity: .3;
    transition: 0s;
}

/* 2. Cải thiện bảng màu */
:root {
    --primary-color: #2ecc71;
    --primary-dark: #27ae60;
    --primary-light: #a9dfbf;
    --secondary-color: #3498db;
    --accent-color: #FFA500;
    --text-color: #333;
    --light-color: #fff;
    --dark-color: #222;
    --gray-color: #f8f9fa;
    --border-radius: 10px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, #2980b9 100%);
    
    /* Màu bổ sung */
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-gray: #f4f4f4;
    --medium-gray: #e0e0e0;
    --dark-gray: #666;
}

/* 3. Tối ưu khoảng trắng */
.section-padding {
    padding: 80px 0 100px;
}

.content-spacing {
    margin-bottom: 30px;
}

.card-spacing {
    padding: 25px;
}

/* Hiệu ứng hover cho các thẻ */
.card-hover {
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.card-hover:hover {
    transform: translateY(-10px);
    border-color: var(--primary-light);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* Hiệu ứng cho hình ảnh */
.img-hover {
    transition: all 0.5s ease;
    overflow: hidden;
}

.img-hover img {
    transition: transform 0.5s ease;
}

.img-hover:hover img {
    transform: scale(1.05);
}

/* Hiệu ứng cho các icon */
.icon-hover {
    transition: all 0.3s ease;
}

.icon-hover:hover {
    transform: translateY(-5px) scale(1.1);
    color: var(--primary-color);
}

/* Hiệu ứng cho các liên kết */
.link-hover {
    position: relative;
    display: inline-block;
}

.link-hover:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.link-hover:hover:after {
    width: 100%;
}

/* Hiệu ứng loading */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(46, 204, 113, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Hiệu ứng cho các phần tử khi scroll */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* Hiệu ứng cho các nút */
.btn-enhanced {
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.3s ease;
}

.btn-enhanced:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
    z-index: -1;
}

.btn-enhanced:hover:before {
    left: 100%;
}

.btn-enhanced:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* Hiệu ứng cho các tiêu đề */
.title-effect {
    position: relative;
    display: inline-block;
}

.title-effect:after {
    content: '';
    position: absolute;
    width: 30%;
    height: 3px;
    background: var(--primary-color);
    bottom: -10px;
    left: 0;
    transition: width 0.3s ease;
}

.title-effect:hover:after {
    width: 100%;
}

/* Hiệu ứng cho các phần tử khi hover */
.hover-zoom {
    transition: transform 0.3s ease;
}

.hover-zoom:hover {
    transform: scale(1.05);
}

/* Hiệu ứng cho các phần tử khi active */
.active-effect {
    position: relative;
}

.active-effect:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    bottom: -5px;
    left: 0;
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: right;
}

.active-effect.active:after,
.active-effect:hover:after {
    transform: scaleX(1);
    transform-origin: left;
}