/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --danger-color: #EF4444;
    --info-color: #3B82F6;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --background-light: #F9FAFB;
    --white: #FFFFFF;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

/* Top Navigation Bar */
.top-navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 15px;
    padding: 15px 30px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    top: 20px;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-brand i {
    font-size: 1.8rem;
    color: var(--success-color);
}

.navbar-menu {
    display: flex;
    gap: 10px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    background: var(--success-color);
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    background: var(--primary-gradient);
    border-radius: 20px;
    margin-bottom: 40px;
    overflow: hidden;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 60px;
    gap: 60px;
    min-height: 500px;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: 20px;
}

.hero-icon {
    font-size: 4rem;
    animation: bounce 2s infinite;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
}

.feature-item i {
    color: #4ade80;
    font-size: 1.2rem;
}

.hero-cta-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 18px 40px;
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(10px);
}

.hero-cta-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* Hero Illustration */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-illustration {
    position: relative;
    width: 400px;
    height: 400px;
}

.illustration-bg {
    width: 100%;
    height: 100%;
    position: relative;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.floating-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    animation: float 3s ease-in-out infinite;
}

.icon-1 {
    top: 20%;
    left: 20%;
    animation-delay: -0.5s;
}

.icon-2 {
    top: 20%;
    right: 20%;
    animation-delay: -1s;
}

.icon-3 {
    bottom: 20%;
    left: 20%;
    animation-delay: -1.5s;
}

.icon-4 {
    bottom: 20%;
    right: 20%;
    animation-delay: -2s;
}

.central-graphic {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    animation: pulse 2s ease-in-out infinite;
}

/* Quick Access Section */
.quick-access-section {
    margin-bottom: 50px;
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 30px;
    text-align: center;
    justify-content: center;
}

.access-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.access-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 20px;
}

.access-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    transition: var(--transition);
}

.students-card::before {
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.fees-card::before {
    background: linear-gradient(90deg, #f093fb, #f5576c);
}

.reports-card::before {
    background: linear-gradient(90deg, #4facfe, #00f2fe);
}

.tools-card::before {
    background: linear-gradient(90deg, #43e97b, #38f9d7);
}

.access-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.access-card:hover::before {
    height: 6px;
}

.card-icon {
    width: 80px;
    height: 80px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    flex-shrink: 0;
}

.students-card .card-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.fees-card .card-icon {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.reports-card .card-icon {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.tools-card .card-icon {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
}

.card-content {
    flex: 1;
}

.card-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.5;
}

.card-stats {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.card-stats span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
}

.card-stats small {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.card-arrow {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.access-card:hover .card-arrow {
    transform: translateX(5px);
    color: var(--success-color);
}

/* Statistics Overview */
.stats-overview {
    margin-bottom: 50px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-content {
    color: white;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Recent Activity */
.recent-activity {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--background-light);
    border-radius: 10px;
    border-left: 4px solid var(--success-color);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--success-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 3px;
}

.activity-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.6s ease-out;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    justify-content: center;
}

.section-title i {
    font-size: 2rem;
    color: white;
}

.section-title h2 {
    color: white;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

/* Enhanced Forms */
.form-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.form-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.form-header i {
    font-size: 1.5rem;
    color: var(--success-color);
}

.form-header h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 25px;
}

.form-group {
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group label i {
    color: var(--info-color);
}

.required {
    color: var(--danger-color);
    font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    transition: var(--transition);
    background: white;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
    transform: translateY(-2px);
}

/* Enhanced Buttons */
.btn-primary, .btn-secondary, .btn-danger, .btn-info {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    margin-right: 15px;
    margin-bottom: 15px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--success-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--info-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: #2563EB;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-danger:hover {
    background: #DC2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-info {
    background: var(--info-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-info:hover {
    background: #1E40AF;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Ripple Effect */
.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple-effect:active::before {
    width: 300px;
    height: 300px;
}

/* Enhanced Cards */
.students-list, .fee-records, .fee-tracking-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.section-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.student-actions, .view-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 15px;
    color: var(--text-secondary);
    z-index: 1;
}

.search-input {
    padding: 12px 20px 12px 45px !important;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    min-width: 250px;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Enhanced Student Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.student-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.6s ease-out;
}

.student-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.student-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.student-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.student-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.delete-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.delete-btn:hover {
    background: #DC2626;
    transform: scale(1.1);
}

.student-info {
    display: grid;
    gap: 12px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    background: var(--background-light);
    border-radius: 8px;
    font-size: 0.9rem;
    border-left: 3px solid var(--info-color);
}

.info-item i {
    color: var(--info-color);
    width: 16px;
}

.edit-btn {
    background: var(--info-color);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    margin-left: 10px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.edit-btn:hover {
    background: #1E40AF;
    transform: translateY(-1px);
}

/* Student Search Container */
.student-search-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    gap: 20px;
    flex-wrap: wrap;
}

.filter-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    color: var(--text-secondary);
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
    transform: translateY(-2px);
}

/* Students Fee Overview Cards */
.students-fee-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.student-fee-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.student-fee-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--success-color);
    transition: var(--transition);
}

.student-fee-card.has-pending::before {
    background: var(--danger-color);
}

.student-fee-card.has-partial::before {
    background: var(--warning-color);
}

.student-fee-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.student-fee-card:hover::before {
    height: 6px;
}

.student-fee-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.student-fee-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.student-fee-class {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.fee-status-badge {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.fee-status-badge.up-to-date {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.fee-status-badge.pending {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.fee-status-badge.partial {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.fee-summary {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.fee-summary-item {
    text-align: center;
    padding: 15px;
    background: var(--background-light);
    border-radius: 10px;
}

.fee-summary-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.fee-summary-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.fee-summary-value.success {
    color: var(--success-color);
}

.fee-summary-value.danger {
    color: var(--danger-color);
}

.fee-summary-value.warning {
    color: var(--warning-color);
}

.recent-payments {
    margin-top: 15px;
}

.recent-payments-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.recent-payment-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.recent-payment-item:last-child {
    border-bottom: none;
}

.recent-payment-month {
    color: var(--text-primary);
    font-weight: 500;
}

.recent-payment-status {
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
}

/* Student Detail View */
.student-detail-container {
    animation: slideInRight 0.6s ease-out;
}

.student-detail-header {
    background: var(--primary-gradient);
    color: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    text-align: center;
}

.student-detail-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.student-detail-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    font-size: 1rem;
    opacity: 0.9;
}

.monthly-timeline {
    display: grid;
    gap: 20px;
}

.month-payment-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.month-payment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.month-payment-card.paid::before {
    background: var(--success-color);
}

.month-payment-card.partial::before {
    background: var(--warning-color);
}

.month-payment-card.pending::before {
    background: var(--danger-color);
}

.month-payment-card.no-record::before {
    background: #E5E7EB;
}

.month-payment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.month-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.payment-amount {
    font-size: 1.1rem;
    font-weight: 600;
}

.payment-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Enhanced Fee Records */
.fee-record {
    background: white;
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    animation: slideInLeft 0.6s ease-out;
    position: relative;
    overflow: hidden;
}

.fee-record:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.fee-record.paid {
    border-left: 5px solid var(--success-color);
}

.fee-record.partial {
    border-left: 5px solid var(--warning-color);
}

.fee-record.pending {
    border-left: 5px solid var(--danger-color);
}

.record-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.record-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.status {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status.paid {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status.partial {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.status.pending {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

/* Summary Cards */
.records-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
    padding: 0;
    background: none;
    border-radius: 0;
}

.summary-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    color: white;
}

.summary-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* Reports Section */
.reports-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.report-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.report-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.card-header i {
    font-size: 1.5rem;
    color: var(--info-color);
}

.card-header h3 {
    color: var(--text-primary);
    font-weight: 600;
}

.quick-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    flex-direction: column;
    gap: 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--success-color);
    min-width: 300px;
    animation: slideInRight 0.3s ease-out;
    position: relative;
}

.toast.error {
    border-left-color: var(--danger-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

.toast.info {
    border-left-color: var(--info-color);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background: white;
    border-radius: 15px;
    padding: 0;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideInUp 0.3s ease-out;
    position: relative;
}

.modal-header {
    background: var(--primary-gradient);
    color: white;
    padding: 20px 30px;
    border-radius: 15px 15px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.modal-content .form-row {
    padding: 0 30px;
}

.modal-content .form-group {
    padding: 0;
    margin: 20px 0;
}

.modal-actions {
    padding: 20px 30px;
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    border-top: 1px solid var(--border-color);
    margin-top: 20px;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-style: italic;
    font-size: 1.1rem;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.slide-in {
    animation: slideInUp 0.6s ease-out;
}

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

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

/* Responsive Design for Homepage */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 40px;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
        justify-content: center;
    }
    
    .hero-illustration {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .top-navbar {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }
    
    .navbar-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-link {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }
    
    .hero-content {
        padding: 30px 20px;
    }
    
    .hero-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .access-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .access-card {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .container {
        padding: 10px;
    }
    
    .app-title {
        font-size: 2rem;
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .student-actions, .view-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .search-input {
        min-width: 100%;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-actions {
        flex-direction: column;
    }
    
    .reports-container {
        grid-template-columns: 1fr;
    }
    
    .form-container {
        padding: 25px;
    }
    
    .students-list, .fee-records, .fee-tracking-container {
        padding: 20px;
    }
    
    .student-search-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .students-fee-overview {
        grid-template-columns: 1fr;
    }
    
    .fee-summary {
        grid-template-columns: 1fr;
    }
    
    .student-detail-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .payment-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-icon {
        font-size: 2.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-illustration {
        width: 250px;
        height: 250px;
    }
    
    .central-graphic {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .floating-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .header-content {
        padding: 20px;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .students-list, .fee-records, .fee-tracking-container {
        padding: 15px;
    }
    
    .student-card {
        padding: 20px;
    }
    
    .fee-record {
        padding: 20px;
    }
    
    .report-card {
        padding: 20px;
    }
    
    .toast {
        min-width: 250px;
    }
    
    .toast-container {
        left: 10px;
        right: 10px;
    }
    
    .modal-content {
        width: 95%;
        margin: 10px;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .modal-content .form-row {
        padding: 0 20px;
        grid-template-columns: 1fr;
    }
    
    .modal-actions {
        padding: 15px 20px;
        flex-direction: column;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-container,
    .students-list,
    .fee-records,
    .fee-tracking-container,
    .report-card {
        background: white;
        border: 2px solid var(--text-primary);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .nav-buttons,
    .btn-primary,
    .btn-secondary,
    .btn-danger,
    .delete-btn {
        display: none;
    }
    
    .container {
        background: white;
    }
    
    .form-container,
    .students-list,
    .fee-records,
    .fee-tracking-container,
    .report-card {
        background: white;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}
/*  */