/* ============================================
   Professional Dashboard System - Main Styles
   Color Scheme: Modern Blue, Green, Amber
   ============================================ */

:root {
    /* Primary Colors */
    --primary-blue: #2563eb;
    --primary-blue-dark: #1e40af;
    --primary-blue-light: #3b82f6;
    
    /* Secondary Colors */
    --secondary-green: #10b981;
    --secondary-green-dark: #059669;
    --secondary-green-light: #34d399;
    
    /* Accent Colors */
    --accent-amber: #f59e0b;
    --accent-amber-dark: #d97706;
    --accent-amber-light: #fbbf24;
    
    /* Status Colors */
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Neutral Colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-dark: #1e293b;
    --bg-sidebar: #0f172a;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    
    /* Shadows */
    --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);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
    height: 100vh;
    overflow: hidden;
}

/* ============================================
   Login Pages Styling
   ============================================ */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease-out;
}

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

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo img {
    max-width: 150px;
    height: auto;
}

.login-logo h1 {
    color: var(--primary-blue);
    font-size: 28px;
    font-weight: 700;
    margin-top: 15px;
}

.login-form {
    margin-top: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    text-align: center;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: white;
    width: 100%;
    box-shadow: var(--shadow-md);
}

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

.btn-success {
    background: linear-gradient(135deg, var(--secondary-green) 0%, var(--secondary-green-light) 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: white;
}

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

/* ============================================
   Dashboard Layout
   ============================================ */

.dashboard-wrapper {
    display: flex;
    height: 100vh;
    background: var(--bg-primary);
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--bg-sidebar) 0%, #1e293b 100%);
    color: white;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.sidebar-logo h3 {
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-item {
    display: block;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.menu-item:hover,
.menu-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: var(--primary-blue-light);
}

.menu-item i {
    width: 20px;
    margin-right: 12px;
}

/* Main Content */
.main-content {
    margin-left: 260px;
    flex: 1;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top Header */
.top-header {
    background: var(--bg-secondary);
    padding: 15px 30px;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-logo img {
    width: 35px;
    height: 35px;
}

.profile-dropdown {
    position: relative;
}

.profile-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
}

.profile-btn:hover {
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.profile-btn img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--bg-secondary);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--bg-primary);
    color: var(--primary-blue);
}

.dropdown-item i {
    width: 20px;
    margin-right: 10px;
}

/* Content Area */
.content-area {
    padding: 30px;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.page-subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* ============================================
   Cards & Statistics
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
}

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

.stat-card.success::before {
    background: linear-gradient(180deg, var(--secondary-green) 0%, var(--secondary-green-light) 100%);
}

.stat-card.warning::before {
    background: linear-gradient(180deg, var(--accent-amber) 0%, var(--accent-amber-light) 100%);
}

.stat-card.danger::before {
    background: linear-gradient(180deg, var(--danger) 0%, #dc2626 100%);
}

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

.stat-title {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-icon {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
}

.stat-card.success .stat-icon {
    background: linear-gradient(135deg, var(--secondary-green) 0%, var(--secondary-green-light) 100%);
}

.stat-card.warning .stat-icon {
    background: linear-gradient(135deg, var(--accent-amber) 0%, var(--accent-amber-light) 100%);
}

.stat-card.danger .stat-icon {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.stat-change {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ============================================
   Tables
   ============================================ */

.card {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
}

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

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

.table thead {
    background: var(--bg-primary);
}

.table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}

.table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: var(--bg-primary);
}

.table-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--secondary-green);
}

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

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-amber);
}

/* ============================================
   Forms
   ============================================ */

.form-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-group-full {
    grid-column: 1 / -1;
}

.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--primary-blue);
    background: rgba(37, 99, 235, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-blue);
    background: rgba(37, 99, 235, 0.1);
}

/* ============================================
   Progress Bars
   ============================================ */

.progress-container {
    margin: 20px 0;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-primary);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: 10px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ============================================
   Charts Container
   ============================================ */

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-md);
}

.chart-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.chart-container {
    position: relative;
    height: 300px;
}

/* ============================================
   Buttons & Actions
   ============================================ */

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

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-icon {
    padding: 8px;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   Tabs
   ============================================ */

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.tab {
    padding: 12px 24px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    top: 2px;
}

.tab.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tab-content {
    display: none;
}

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

/* ============================================
   Modals
   ============================================ */

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

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
}

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

.modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Utilities
   ============================================ */

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mt-30 {
    margin-top: 30px;
}

.mb-30 {
    margin-bottom: 30px;
}

.download-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--secondary-green) 0%, var(--secondary-green-light) 100%);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: var(--transition);
    margin-top: 15px;
}

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

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

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