/* CSS สำหรับเว็บไซต์ประชาสัมพันธ์ฝ่ายวางแผนและประกันคุณภาพการศึกษา */
/* คณะวิทยาการจัดการ มหาวิทยาลัยราชภัฏเพชรบูรณ์ */

/* Reset และ Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* สีหลัก - โทนส้ม-ฟ้า */
    --primary-orange: #FF6B35;
    --secondary-orange: #FF8C42;
    --light-orange: #FFB366;
    --primary-blue: #4A90E2;
    --secondary-blue: #7BB3F0;
    --light-blue: #A8D0F0;
    
    /* สีเสริม */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --gray: #6C757D;
    --dark-gray: #343A40;
    --black: #212529;
    
    /* Typography */
    --font-family: 'Prompt', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 48px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-orange), var(--light-orange));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Header */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}


/* Navigation */
.navbar {
    background: var(--white);
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h2 {
    color: var(--primary-blue);
    font-size: var(--font-size-lg);
    margin-bottom: 0;
    line-height: 1.2;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-orange);
    background: rgba(255, 107, 53, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    padding: var(--spacing-2xl) 0;
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    color: var(--white);
}

.hero-text h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    line-height: 1.2;
}

.hero-text h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
    opacity: 0.9;
    line-height: 1.3;
}

.hero-text p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.hero-buttons .btn-primary {
    background: var(--primary-orange);
    color: var(--white);
    border: 2px solid var(--primary-orange);
}

.hero-buttons .btn-primary:hover {
    background: var(--secondary-orange);
    border-color: var(--secondary-orange);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero-buttons .btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.hero-buttons .btn-outline:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.staff-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    text-align: center;
    max-width: 500px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.staff-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-orange), var(--secondary-orange));
}

.staff-image {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.staff-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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


.staff-info h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.position {
    color: var(--primary-orange);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
    line-height: 1.3;
}

.department,
.university {
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.department-university {
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.staff-contact {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--light-gray);
}

.staff-contact .contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    color: var(--gray);
    font-size: var(--font-size-sm);
}

.staff-contact .contact-item i {
    color: var(--primary-orange);
    width: 16px;
}

/* Section Styles */
section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    color: var(--gray);
    font-size: var(--font-size-lg);
}



/* Evaluation Section */
.evaluation {
    background: var(--light-gray);
}

.evaluation-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--light-blue);
}

.tab-btn {
    background: none;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--gray);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
    color: var(--primary-orange);
    border-bottom-color: var(--primary-orange);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.evaluation-content {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.evaluation-content h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.evaluation-criteria {
    margin-top: var(--spacing-lg);
}

.evaluation-criteria h4 {
    color: var(--primary-orange);
    margin-bottom: var(--spacing-sm);
}

.evaluation-criteria ul {
    margin-left: var(--spacing-md);
}

.evaluation-criteria li {
    margin-bottom: var(--spacing-xs);
}

/* Year Selection */
.year-selection {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--light-gray);
    border-radius: var(--border-radius-lg);
}

.year-selection h4 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.year-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.year-btn {
    background: var(--white);
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.year-btn:hover,
.year-btn.active {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Year Data */
.year-data {
    display: none;
    margin-top: var(--spacing-lg);
}

.year-data.active {
    display: block;
}

.year-data h4 {
    color: var(--primary-orange);
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-xl);
}

/* Programs Section */
.programs-section {
    margin-bottom: var(--spacing-xl);
}

.programs-section h5 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.programs-section h5 i {
    color: var(--primary-orange);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.program-item {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition);
    border-left: 4px solid var(--primary-orange);
}

.program-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.program-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.program-info {
    flex: 1;
}

.program-info h6 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.3;
}

.program-info .btn {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    min-width: 100px;
}

/* News Section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.loading-news,
.no-news,
.error-news {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--gray);
    grid-column: 1 / -1;
}

.loading-news i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--primary-orange);
}

.no-news i,
.error-news i {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    color: var(--gray);
}

.error-news i {
    color: #dc3545;
}

.news-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

/* รูปภาพหลายรูป */
.news-image {
    position: relative;
    overflow: hidden;
}

.news-image .image-gallery {
    display: flex;
    gap: 5px;
    height: 200px;
}

.news-image .image-gallery img {
    flex: 1;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-md);
}

.news-image .image-count {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 107, 53, 0.9);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.news-content {
    padding: var(--spacing-lg);
}

.news-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.news-content h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.news-content p {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
}

.read-more {
    color: var(--primary-orange);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--secondary-orange);
}

/* Contact Section */
.contact {
    background: var(--light-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.contact-details h4 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--gray);
    margin-bottom: 0;
}

.contact-form {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--light-blue);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    color: var(--primary-orange);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--light-gray);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-orange);
}

.footer-bottom {
    border-top: 1px solid var(--gray);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--light-gray);
}

/* Documents Section */
.documents {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.documents::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-orange), var(--primary-blue));
}

.documents-grid {
    margin-top: 40px;
}

.category-section {
    margin-bottom: 50px;
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid rgba(74, 144, 226, 0.1);
}

.category-section h3 {
    color: #4A90E2;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #4A90E2;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 600;
    position: relative;
}

.category-section h3::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-orange);
}

.documents-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 25px;
}

.document-item {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    border: 1px solid rgba(74, 144, 226, 0.1);
    position: relative;
    overflow: hidden;
    min-height: 120px;
}

.document-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-orange), var(--primary-blue));
    transition: width 0.3s ease;
}

.document-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-color: var(--primary-blue);
}

.document-item:hover::before {
    width: 6px;
}

.document-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #dc3545, #c82333);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    transition: all 0.3s ease;
}

.document-item:hover .document-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
}

.document-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.document-info h4 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.2rem;
    line-height: 1.4;
    font-weight: 600;
    transition: color 0.3s ease;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    max-height: 2.8em;
}

.document-item:hover .document-info h4 {
    color: var(--primary-blue);
}

.document-info p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 12px;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    max-height: 4.5em;
}

.document-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 15px;
}

.document-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: rgba(74, 144, 226, 0.1);
    border-radius: 6px;
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.document-meta span:hover {
    background: rgba(74, 144, 226, 0.2);
    color: var(--primary-blue);
}

.document-actions {
    flex-shrink: 0;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: auto;
}

.document-actions .btn {
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.document-actions .btn::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: left 0.5s ease;
}

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

.document-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.3);
}

.no-documents {
    text-align: center;
    padding: 80px 20px;
    color: #666;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.no-documents i {
    font-size: 4rem;
    color: #ddd;
    margin-bottom: 20px;
}

.no-documents h3 {
    color: #999;
    margin-bottom: 10px;
}

.no-documents p {
    color: #ccc;
}

/* Responsive Design */

/* Tablet */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 36px;
        --font-size-3xl: 28px;
        --font-size-2xl: 22px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    
    .nav-brand h2 {
        font-size: var(--font-size-sm);
        white-space: nowrap;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
        margin-top: 120px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: var(--font-size-3xl);
    }
    
    .hero-text h2 {
        font-size: var(--font-size-xl);
    }
    
    .hero-text p {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .staff-card {
        max-width: 350px;
        margin: 0 auto;
    }
    
    .staff-image {
        width: 150px;
        height: 150px;
    }
    
    
    
    .evaluation-tabs {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .year-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .year-btn {
        width: 200px;
        text-align: center;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .program-item {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .program-icon {
        align-self: center;
        width: 60px;
        height: 60px;
        font-size: var(--font-size-xl);
    }
    
    .tab-btn {
        text-align: center;
        border-bottom: none;
        border-left: 3px solid transparent;
    }
    
    .tab-btn.active,
    .tab-btn:hover {
        border-bottom: none;
        border-left-color: var(--primary-orange);
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-4xl: 28px;
        --font-size-3xl: 24px;
        --font-size-2xl: 20px;
        --spacing-2xl: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    
    .nav-brand h2 {
        font-size: var(--font-size-base);
        white-space: nowrap;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
        margin-top: 100px;
    }
    
    .hero-text h1 {
        font-size: var(--font-size-2xl);
    }
    
    .hero-text h2 {
        font-size: var(--font-size-lg);
    }
    
    .hero-text p {
        font-size: var(--font-size-sm);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    .staff-card {
        max-width: 300px;
        padding: var(--spacing-lg);
    }
    
    .staff-image {
        width: 120px;
        height: 120px;
    }
    
    
    
    .news-card,
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .contact-icon {
        align-self: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive Design for Documents */
@media (max-width: 768px) {
    .documents-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .document-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 20px;
    }
    
    .document-info {
        width: 100%;
        text-align: center;
    }
    
    .document-meta {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .document-actions {
        margin-top: 15px;
        width: 100%;
    }
    
    .document-actions .btn {
        width: 100%;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .documents {
        padding: 40px 0;
    }
    
    .category-section {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .category-section h3 {
        font-size: 1.1rem;
    }
    
    .document-item {
        padding: 15px;
        min-height: auto;
    }
    
    .document-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .document-info h4 {
        font-size: 1.1rem;
        -webkit-line-clamp: 2;
        max-height: 2.8em;
    }
    
    .document-info p {
        font-size: 0.9rem;
        -webkit-line-clamp: 2;
        max-height: 3em;
    }
    
    .document-meta {
        gap: 8px;
        font-size: 0.8rem;
    }
    
    .document-meta span {
        padding: 3px 6px;
    }
}