/* ============================================
   PREMIUM CRM THEME - Modern, Animated, Flashy
   ============================================ */

:root {
    /* Premium Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --info-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --primary-light: #8b9ef7;
    
    --sidebar-width: 280px;
    --sidebar-bg: linear-gradient(180deg, #2c3e50 0%, #34495e 100%);
    --sidebar-hover: rgba(255, 255, 255, 0.1);
    
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --border-radius: 12px;
    --border-radius-lg: 16px;
}

/* ============================================
   GLOBAL STYLES & ANIMATIONS
   ============================================ */

* {
    transition: background-color var(--transition-fast), 
                color var(--transition-fast),
                transform var(--transition-fast),
                box-shadow var(--transition-fast);
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    background-attachment: fixed;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

body > * {
    position: relative;
    z-index: 1;
}

/* Smooth Page Transitions */
.page-transition {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ============================================
   NAVBAR ENHANCEMENTS
   ============================================ */

.navbar {
    background: var(--primary-gradient) !important;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all var(--transition-normal);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -0.5px;
    transition: transform var(--transition-fast);
    text-decoration: none;
    color: white !important;
}

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

.brand-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.navbar-brand:hover .brand-icon {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(5deg);
}

.brand-icon i {
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

.brand-name {
    font-size: 1.1rem;
    line-height: 1.2;
}

.brand-tagline {
    font-size: 0.7rem;
    opacity: 0.8;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.nav-link {
    position: relative;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: all var(--transition-fast);
    margin: 0 0.25rem;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transform: translateX(-50%);
    transition: width var(--transition-fast);
}

.nav-link:hover::before {
    width: 80%;
}

.dropdown-menu {
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    animation: fadeIn 0.3s ease-out;
    margin-top: 0.5rem;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    margin-bottom: 0.25rem;
}

.dropdown-item:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateX(5px);
}

.dropdown-item:last-child {
    margin-bottom: 0;
}

/* ============================================
   SIDEBAR ENHANCEMENTS
   ============================================ */

.sidebar {
    background: var(--sidebar-bg);
    min-height: calc(100vh - 70px);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
    padding-top: 2rem !important;
    position: sticky;
    top: 70px;
    animation: slideInRight 0.4s ease-out;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    font-weight: 500;
}

.sidebar .nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: white;
    transform: scaleY(0);
    transition: transform var(--transition-normal);
}

.sidebar .nav-link:hover {
    background: var(--sidebar-hover);
    color: white;
    transform: translateX(5px);
    padding-left: 2rem;
}

.sidebar .nav-link:hover::before {
    transform: scaleY(1);
}

.sidebar .nav-link.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    transform: translateX(5px);
}

.sidebar .nav-link.active::before {
    transform: scaleY(1);
}

.sidebar .nav-link i {
    width: 24px;
    margin-right: 0.75rem;
    font-size: 1.1rem;
    transition: transform var(--transition-fast);
}

.sidebar .nav-link:hover i {
    transform: scale(1.2);
}

.sidebar .collapse .nav-link {
    padding-left: 3rem;
    font-size: 0.9rem;
}

/* ============================================
   CARD ENHANCEMENTS
   ============================================ */

.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
    overflow: hidden;
    background: white;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

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

.card:hover::before {
    transform: scaleX(1);
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 2px solid #e9ecef;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
}

.card-body {
    padding: 1.5rem;
}

/* Stats Cards with Gradients */
.card.text-white {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
}

.card.text-white::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 3s infinite;
}

.card.bg-primary {
    background: var(--primary-gradient) !important;
}

.card.bg-success {
    background: var(--success-gradient) !important;
}

.card.bg-info {
    background: var(--info-gradient) !important;
}

.card.bg-warning {
    background: var(--warning-gradient) !important;
}

.card.bg-danger {
    background: var(--danger-gradient) !important;
}

/* ============================================
   BUTTON ENHANCEMENTS
   ============================================ */

.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
}

.btn::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;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

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

.btn-primary {
    background: var(--primary-gradient);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.btn-success {
    background: var(--success-gradient);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
}

.btn-info {
    background: var(--info-gradient);
    box-shadow: 0 4px 15px rgba(67, 233, 123, 0.4);
}

.btn-warning {
    background: var(--warning-gradient);
    box-shadow: 0 4px 15px rgba(250, 112, 154, 0.4);
}

.btn-danger {
    background: var(--danger-gradient);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

/* ============================================
   TABLE ENHANCEMENTS
   ============================================ */

.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    background: white;
    box-shadow: var(--card-shadow);
}

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

.table thead th {
    border: none;
    padding: 1.25rem 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.75rem;
}

.table tbody tr {
    transition: all var(--transition-fast);
    border-bottom: 1px solid #f0f0f0;
}

.table tbody tr:hover {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.05) 0%, transparent 100%);
    transform: scale(1.01);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.table tbody td {
    padding: 1.25rem 1rem;
    vertical-align: middle;
}

/* ============================================
   FORM ENHANCEMENTS
   ============================================ */

.form-control,
.form-select {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

.form-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group-text {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid #e9ecef;
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

/* ============================================
   ALERT ENHANCEMENTS
   ============================================ */

.alert {
    border-radius: var(--border-radius);
    border: none;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: slideInRight 0.4s ease-out;
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
}

/* ============================================
   BADGE ENHANCEMENTS
   ============================================ */

.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-fast);
}

.badge:hover {
    transform: scale(1.1);
}

.bg-success {
    background: var(--success-gradient) !important;
}

.bg-info {
    background: var(--info-gradient) !important;
}

.bg-warning {
    background: var(--warning-gradient) !important;
}

.bg-danger {
    background: var(--danger-gradient) !important;
}

.bg-primary {
    background: var(--primary-gradient) !important;
}

/* ============================================
   LOADING STATES
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease-out;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius);
}

/* ============================================
   SCROLLBAR ENHANCEMENTS
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 10px;
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ============================================
   MODAL ENHANCEMENTS
   ============================================ */

.modal-content {
    border-radius: var(--border-radius-lg);
    border: none;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.3s ease-out;
}

.modal-header {
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    border-bottom: none;
    padding: 1.5rem;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-body {
    padding: 2rem;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

main {
    padding: 2rem 0;
    animation: fadeIn 0.5s ease-out;
}

main h1, main h2, main h3 {
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 1.5rem;
}

main h1 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.5rem;
}

main h2 {
    color: #2c3e50;
    font-size: 2rem;
}

/* Stats Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stats-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.stats-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s;
}

.stats-card:hover::after {
    opacity: 1;
}

/* Action Buttons Group */
.action-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

/* Filter Section */
.filter-section {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
    animation: fadeInUp 0.4s ease-out;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
    animation: pulse 2s infinite;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 70px;
        left: -100%;
        z-index: 999;
        transition: left var(--transition-normal);
        height: calc(100vh - 70px);
        overflow-y: auto;
    }
    
    .sidebar.show {
        left: 0;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

/* ============================================
   UTILITY ANIMATIONS
   ============================================ */

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-slide-up {
    animation: fadeInUp 0.5s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Hover Lift Effect */
.hover-lift {
    transition: transform var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

/* Shine Effect */
.shine {
    position: relative;
    overflow: hidden;
}

.shine::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.shine:hover::after {
    left: 100%;
}