/* ===========================
   Global Styles & Reset
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-navy: #21D9D0;
    --primary-blue: #089992;
    --secondary-red: #dc3545;
    --secondary-green: #28a745;
    --accent-yellow: #ffc107;
    --accent-orange: #fd7e14;
    --accent-brown: #8b4513;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #6c757d;
    --text-dark: #212529;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--light-gray);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===========================
   Header Styles
   =========================== */
.header {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo i {
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 1rem;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

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

.nav-link.active {
    background: rgba(255,255,255,0.2);
}

/* ===========================
   Main Container Layout
   =========================== */
.main-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
}

/* ===========================
   Form Section Styles
   =========================== */
.form-section {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.form-card {
    padding: 2rem;
}

.form-title {
    font-size: 1.5rem;
    color: var(--primary-navy);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--medium-gray);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--secondary-red);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition-fast);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(44, 74, 124, 0.1);
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: var(--secondary-red);
}

.form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: var(--dark-gray);
}

/* Radio Buttons */
.radio-group {
    display: flex;
    gap: 2rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
}

.radio-label input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-blue);
    border-radius: 50%;
    position: relative;
    transition: var(--transition-fast);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--primary-blue);
    border-radius: 50%;
}

/* ===========================
   Summary Section Styles
   =========================== */
.summary-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.summary-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    border-left: 4px solid;
    transition: var(--transition-normal);
}

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

.summary-withdrawal {
    border-left-color: var(--secondary-red);
    background: linear-gradient(135deg, #fff 0%, #ffe5e5 100%);
}

.summary-deposit {
    border-left-color: var(--secondary-red);
    background: linear-gradient(135deg, #fff 0%, #ffe5e5 100%);
}

.summary-count {
    border-left-color: var(--accent-brown);
    background: linear-gradient(135deg, #fff 0%, #f5e6d3 100%);
}

.summary-last {
    border-left-color: var(--accent-yellow);
    background: linear-gradient(135deg, #fff 0%, #fff9e6 100%);
}

.summary-icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.summary-withdrawal .summary-icon {
    color: var(--secondary-red);
}

.summary-deposit .summary-icon {
    color: var(--secondary-red);
}

.summary-count .summary-icon {
    color: var(--accent-brown);
}

.summary-last .summary-icon {
    color: var(--accent-yellow);
}

.summary-content h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 0.25rem;
}

.summary-amount,
.summary-number,
.summary-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

/* Button Group */
.button-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-submit {
    background: var(--secondary-green);
    color: var(--white);
}

.btn-submit:hover {
    background: #218838;
}

.btn-reset {
    background: var(--secondary-red);
    color: var(--white);
}

.btn-reset:hover {
    background: #c82333;
}

/* ===========================
   Dashboard Styles
   =========================== */
.dashboard-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-normal);
    border-left: 4px solid;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-yellow {
    border-left-color: var(--accent-yellow);
    background: linear-gradient(135deg, #fff 0%, #fff9e6 100%);
}

.stat-blue {
    border-left-color: var(--primary-blue);
    background: linear-gradient(135deg, #fff 0%, #e8f0ff 100%);
}

.stat-green {
    border-left-color: var(--secondary-green);
    background: linear-gradient(135deg, #fff 0%, #e8f5e9 100%);
}

.stat-orange {
    border-left-color: var(--accent-orange);
    background: linear-gradient(135deg, #fff 0%, #fff3e0 100%);
}

.stat-icon {
    font-size: 3rem;
    opacity: 0.8;
}

.stat-yellow .stat-icon {
    color: var(--accent-yellow);
}

.stat-blue .stat-icon {
    color: var(--primary-blue);
}

.stat-green .stat-icon {
    color: var(--secondary-green);
}

.stat-orange .stat-icon {
    color: var(--accent-orange);
}

.stat-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.chart-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--medium-gray);
}

.chart-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-navy);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.refresh-btn {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.refresh-btn:hover {
    background: var(--primary-navy);
}

.chart-container {
    position: relative;
}

/* Customer Section */
.customer-section {
    margin-bottom: 2rem;
}

.customer-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.customer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--medium-gray);
}

.customer-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-navy);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.search-box i {
    position: absolute;
    left: 1rem;
    color: var(--dark-gray);
}

.search-box input {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 0.95rem;
    width: 300px;
    transition: var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(44, 74, 124, 0.1);
}

.customer-list {
    max-height: 400px;
    overflow-y: auto;
}

.customer-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--medium-gray);
    transition: var(--transition-fast);
}

.customer-item:hover {
    background: var(--light-gray);
}

.customer-name {
    font-weight: 600;
    color: var(--text-dark);
}

.customer-amount {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
}

/* Transactions Table */
.transactions-section {
    margin-bottom: 2rem;
}

.transactions-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.transactions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--medium-gray);
}

.transactions-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-navy);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.export-btn {
    background: var(--secondary-green);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.export-btn:hover {
    background: #218838;
    transform: translateY(-2px);
}

.table-responsive {
    overflow-x: auto;
}

.transactions-table {
    width: 100%;
    border-collapse: collapse;
}

.transactions-table thead {
    background: var(--primary-navy);
    color: var(--white);
}

.transactions-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
}

.transactions-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--medium-gray);
    font-size: 0.9rem;
}

.transactions-table tbody tr:hover {
    background: var(--light-gray);
}

.text-center {
    text-align: center;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.btn-edit {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-edit:hover {
    background: var(--primary-navy);
}

.btn-delete {
    background: var(--secondary-red);
    color: var(--white);
}

.btn-delete:hover {
    background: #c82333;
}

.btn-cancel {
    background: var(--dark-gray);
    color: var(--white);
}

.btn-cancel:hover {
    background: #5a6268;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.page-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--medium-gray);
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.page-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

.page-btn.active {
    background: var(--primary-navy);
    color: var(--white);
    border-color: var(--primary-navy);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content h3 {
    font-size: 1.3rem;
    color: var(--primary-navy);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-content p {
    margin-bottom: 1.5rem;
    color: var(--dark-gray);
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--secondary-green);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    z-index: 3000;
    opacity: 0;
    transform: translateY(100px);
    transition: var(--transition-normal);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    background: var(--secondary-red);
}

.toast i {
    font-size: 1.5rem;
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--dark-gray);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .main-container {
        grid-template-columns: 1fr;
    }
    
    .summary-section {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
    
    .button-group {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        width: 100%;
        justify-content: center;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .summary-section {
        grid-template-columns: 1fr;
    }
    
    .button-group {
        grid-column: span 1;
    }
    
    .customer-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .transactions-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .toast {
        right: 1rem;
        left: 1rem;
        bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .radio-group {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .summary-amount,
    .summary-number {
        font-size: 1.2rem;
    }
}