/* 2025 Minimalist Corporate Design System */
:root {
    /* Modern Neutral Palette */
    --primary: #2563eb;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-900: #1e3a8a;
    
    /* Neutral Grays */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Semantic Colors */
    --success: #10b981;
    --success-50: #ecfdf5;
    --warning: #f59e0b;
    --warning-50: #fffbeb;
    --danger: #ef4444;
    --danger-50: #fef2f2;
    --info: #06b6d4;
    --info-50: #ecfeff;
    
    /* Typography */
    --font-family-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* Spacing System */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Modern Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Animation Curves */
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Responsive Breakpoints */
    --mobile: 576px;
    --tablet: 768px;
    --desktop: 992px;
    --large: 1200px;
}

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

/* Base Styles */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
    font-size: 0.875rem;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Mobile First Typography */
@media (max-width: 576px) {
    body {
        font-size: 0.75rem;
        padding: 0;
    }
    
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.4rem; }
    h4 { font-size: 1.2rem; }
    h5 { font-size: 1.1rem; }
    h6 { font-size: 1rem; }
    
    .display-1 { font-size: 2.5rem !important; }
    .display-2 { font-size: 2.2rem !important; }
    .display-3 { font-size: 2rem !important; }
    .display-4 { font-size: 1.8rem !important; }
    .display-5 { font-size: 1.5rem !important; }
    .display-6 { font-size: 1.3rem !important; }
}

/* Clean Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    pointer-events: none;
    z-index: -1;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--gray-900);
    letter-spacing: -0.025em;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-4);
    color: var(--gray-600);
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color 0.2s var(--ease-out);
}

a:hover {
    color: var(--primary-700);
}

/* Minimalist Navigation */
.navbar {
    background: white !important;
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-4) 0;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Mobile Navbar */
@media (max-width: 991px) {
    .navbar {
        padding: var(--space-3) 0;
    }
    
    .navbar-brand {
        font-size: 1.25rem !important;
    }
    
    .navbar-nav {
        background: white;
        border-radius: var(--radius-lg);
        padding: var(--space-3);
        margin-top: var(--space-3);
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-nav .nav-link {
        padding: var(--space-3) var(--space-4) !important;
        border-bottom: 1px solid var(--gray-100);
        margin-bottom: var(--space-1);
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
        margin-bottom: 0;
    }
    
    .navbar-collapse {
        max-height: 70vh;
        overflow-y: auto;
    }
}

@media (max-width: 576px) {
    .navbar {
        padding: var(--space-2) 0;
    }
    
    .navbar-brand {
        font-size: 1.1rem !important;
        line-height: 1.2;
    }
    
    .navbar-nav .nav-link {
        font-size: 0.8rem;
        padding: var(--space-2) var(--space-3) !important;
    }
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--gray-900) !important;
    letter-spacing: -0.02em;
    transition: all 0.2s var(--ease-out);
}

.navbar-brand:hover {
    color: var(--primary-600) !important;
}

.navbar-nav {
    gap: var(--space-2);
}

.navbar-nav .nav-link {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--gray-600) !important;
    padding: var(--space-2) var(--space-4) !important;
    border-radius: var(--radius-lg);
    transition: all 0.2s var(--ease-out);
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary-600) !important;
    background-color: var(--primary-50);
}

.navbar-nav .nav-link:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* Minimalist Cards */
.card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s var(--ease-out);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
}

.card-header {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-6);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.card-body {
    padding: var(--space-6);
}

/* Stats Cards */
.stats-card {
    position: relative;
    overflow: hidden;
    transition: all 0.2s var(--ease-out);
}

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

.stats-card.bg-primary {
    background: var(--primary-600) !important;
    border-color: var(--primary-700);
}

.stats-card.bg-success {
    background: var(--success) !important;
    border-color: var(--success);
}

.stats-card.bg-info {
    background: var(--info) !important;
    border-color: var(--info);
}

.stats-card h4 {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0;
    color: white;
}

.stats-card p {
    font-weight: 500;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
}

.stats-card .fas {
    opacity: 0.8;
}

/* Modern Buttons */
.btn {
    font-weight: 500;
    font-size: 0.875rem;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    transition: all 0.2s var(--ease-out);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    cursor: pointer;
}

.btn:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-700);
    border-color: var(--primary-700);
    color: white;
}

.btn-outline-primary {
    background-color: transparent;
    border-color: var(--primary-600);
    color: var(--primary-600);
}

.btn-outline-primary:hover {
    background-color: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
}

.btn-success {
    background-color: var(--success);
    border-color: var(--success);
    color: white;
}

.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-outline-secondary:hover {
    background-color: var(--gray-100);
    border-color: var(--gray-400);
    color: var(--gray-800);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.8125rem;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn-group .btn {
    margin: 0;
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.btn-group .btn:only-child {
    border-radius: var(--radius-lg);
}

/* Clean Forms */
.form-control,
.form-select {
    font-size: 0.875rem;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background-color: white;
    transition: all 0.2s var(--ease-out);
    color: var(--gray-900);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--space-2);
    font-size: 0.875rem;
}

.form-text {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: var(--space-1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.input-group {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.input-group-text {
    background-color: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-600);
}

/* Form Validation */
.is-invalid {
    border-color: var(--danger) !important;
}

.is-valid {
    border-color: var(--success) !important;
}

.invalid-feedback {
    color: var(--danger);
    font-size: 0.8125rem;
    margin-top: var(--space-1);
}

.valid-feedback {
    color: var(--success);
    font-size: 0.8125rem;
    margin-top: var(--space-1);
}

/* Clean Tables */
.table {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    border: none;
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-4);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr {
    transition: background-color 0.2s var(--ease-out);
    border: none;
}

.table tbody tr:hover {
    background-color: var(--gray-50);
}

.table tbody td {
    padding: var(--space-4);
    border: none;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table-responsive {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

/* Clean Badges */
.badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-md);
    letter-spacing: 0.025em;
    display: inline-flex;
    align-items: center;
}

.bg-success {
    background-color: var(--success-50) !important;
    color: var(--success) !important;
}

.bg-secondary {
    background-color: var(--gray-100) !important;
    color: var(--gray-600) !important;
}

.bg-primary {
    background-color: var(--primary-50) !important;
    color: var(--primary-700) !important;
}

.bg-warning {
    background-color: var(--warning-50) !important;
    color: var(--warning) !important;
}

.bg-danger {
    background-color: var(--danger-50) !important;
    color: var(--danger) !important;
}

.bg-info {
    background-color: var(--info-50) !important;
    color: var(--info) !important;
}

/* Enhanced Stats Cards */
.stats-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stats-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

.stats-card:hover {
    transform: translateY(-5px) scale(1.05);
}

.stats-card h4 {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.stats-card p {
    font-weight: 600;
    margin: 0;
    opacity: 0.9;
}

.stats-card .fas {
    opacity: 0.7;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

/* Clean Alerts */
.alert {
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    font-size: 0.875rem;
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.alert-success {
    background-color: var(--success-50);
    border-color: var(--success);
    color: var(--success);
}

.alert-danger {
    background-color: var(--danger-50);
    border-color: var(--danger);
    color: var(--danger);
}

.alert-info {
    background-color: var(--info-50);
    border-color: var(--info);
    color: var(--info);
}

.alert-warning {
    background-color: var(--warning-50);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-dismissible {
    position: relative;
    padding-right: var(--space-12);
}

.alert-dismissible .btn-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1);
    background: none;
    border: none;
    opacity: 0.5;
    transition: opacity 0.2s var(--ease-out);
}

.alert-dismissible .btn-close:hover {
    opacity: 1;
}

/* File upload area */
.upload-area {
    border: 2px dashed #ddd;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--admin-primary);
    background-color: rgba(13, 110, 253, 0.05);
}

.upload-area.dragover {
    border-color: var(--admin-success);
    background-color: rgba(25, 135, 84, 0.05);
}

/* Sidebar */
.sidebar {
    background: linear-gradient(180deg, var(--admin-dark), rgba(33, 37, 41, 0.9));
    min-height: 100vh;
    padding: 20px 0;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    border-radius: 6px;
    margin: 2px 10px;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: var(--admin-primary);
    color: white;
}

/* Premium Loading & Animations */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease-out;
}

.modern-loader {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-top: 3px solid var(--admin-primary);
    border-radius: 50%;
    animation: modernSpin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

@keyframes modernSpin {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

/* Smooth Page Transitions */
.page-transition {
    animation: slideInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Pulse Animation for Interactive Elements */
.pulse-on-hover:hover {
    animation: pulse 0.6s cubic-bezier(0.4, 0, 0.6, 1);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: var(--space-3) 0;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card-body {
        padding: var(--space-4);
    }
    
    .card-header {
        padding: var(--space-4);
    }
    
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-group .btn {
        width: 100%;
        border-radius: var(--radius-lg);
        margin-bottom: var(--space-2);
    }
    
    .stats-card h4 {
        font-size: 1.875rem;
    }
    
    .table-responsive {
        font-size: 0.8125rem;
    }
}

@media (max-width: 640px) {
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .card-body {
        padding: var(--space-3);
    }
    
    .stats-card h4 {
        font-size: 1.5rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #0f172a;
        --gray-100: #1e293b;
        --gray-200: #334155;
        --gray-300: #475569;
        --gray-400: #64748b;
        --gray-500: #94a3b8;
        --gray-600: #cbd5e1;
        --gray-700: #e2e8f0;
        --gray-800: #f1f5f9;
        --gray-900: #f8fafc;
    }
}

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

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .alert,
    .btn-group {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid var(--gray-300) !important;
        break-inside: avoid;
    }
    
    .page-transition {
        animation: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* Subtle Animations */
.fade-in {
    animation: fadeIn 0.3s var(--ease-out);
}

@keyframes fadeIn {
    from { 
        opacity: 0;
        transform: translateY(10px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    animation: slideUp 0.4s var(--ease-out);
}

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

/* Page Transitions */
.page-transition {
    animation: pageEnter 0.4s var(--ease-out);
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-900));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-soft {
    box-shadow: var(--shadow-sm);
}

.shadow-medium {
    box-shadow: var(--shadow-md);
}

.shadow-large {
    box-shadow: var(--shadow-lg);
}

/* Focus Management */
*:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-200);
    border-top: 2px solid var(--primary-600);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Extended Mobile Responsive Rules for Admin Panel */

/* Dashboard Layout Mobile Fixes */
@media (max-width: 992px) {
    .d-flex.justify-content-between {
        flex-direction: column !important;
        gap: var(--space-4);
        align-items: flex-start !important;
    }
    
    .d-flex.gap-2 {
        flex-direction: column !important;
        width: 100%;
        gap: var(--space-2) !important;
    }
    
    .d-flex.gap-2 .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    /* Enhanced Container Spacing */
    .container {
        padding-left: var(--space-3) !important;
        padding-right: var(--space-3) !important;
    }
    
    /* Dashboard Header Mobile */
    .display-5 {
        font-size: 1.75rem !important;
        line-height: 1.2 !important;
        margin-bottom: var(--space-2) !important;
    }
    
    /* Stats Cards Mobile */
    .stats-card .card-body {
        padding: var(--space-4) !important;
    }
    
    .stats-card h4 {
        font-size: 1.875rem !important;
    }
    
    .stats-card .fas {
        font-size: 1.5rem !important;
    }
    
    /* Enhanced Table Mobile */
    .table-responsive {
        border-radius: var(--radius-lg);
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .table {
        min-width: 600px;
        margin-bottom: 0;
    }
    
    .table thead th {
        padding: var(--space-3) var(--space-2);
        font-size: 0.75rem;
        white-space: nowrap;
    }
    
    .table tbody td {
        padding: var(--space-3) var(--space-2);
        font-size: 0.8125rem;
        white-space: nowrap;
    }
    
    /* Enhanced Buttons Mobile */
    .btn {
        padding: var(--space-3) var(--space-4);
        font-size: 0.875rem;
        min-height: 44px; /* Touch target size */
    }
    
    .btn-sm {
        padding: var(--space-2) var(--space-3);
        font-size: 0.8125rem;
        min-height: 36px;
    }
    
    .btn-lg {
        padding: var(--space-4) var(--space-6);
        font-size: 1rem;
        min-height: 48px;
    }
    
    /* Enhanced Forms Mobile */
    .form-control,
    .form-select {
        padding: var(--space-3) var(--space-4);
        font-size: 0.875rem;
        min-height: 44px;
    }
    
    .form-label {
        font-size: 0.875rem;
        font-weight: 600;
        margin-bottom: var(--space-2);
    }
    
    /* Modal Mobile */
    .modal-dialog {
        margin: var(--space-3);
        max-width: calc(100% - 2 * var(--space-3));
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--space-4);
    }
    
    /* Enhanced Card Mobile */
    .card-header {
        padding: var(--space-4);
        font-size: 1rem;
    }
    
    .card-body {
        padding: var(--space-4);
    }
}

@media (max-width: 576px) {
    /* Extra Small Mobile Optimization */
    .container {
        padding-left: var(--space-2) !important;
        padding-right: var(--space-2) !important;
    }
    
    /* Typography Mobile */
    .display-5 {
        font-size: 1.5rem !important;
        margin-bottom: var(--space-3) !important;
    }
    
    h1 { font-size: 1.625rem !important; }
    h2 { font-size: 1.375rem !important; }
    h3 { font-size: 1.125rem !important; }
    h4 { font-size: 1rem !important; }
    h5 { font-size: 0.9375rem !important; }
    
    /* Stats Cards Extra Small */
    .stats-card .card-body {
        padding: var(--space-3) !important;
    }
    
    .stats-card h4 {
        font-size: 1.5rem !important;
        line-height: 1.2;
    }
    
    .stats-card p {
        font-size: 0.75rem !important;
    }
    
    .stats-card .fas {
        font-size: 1.25rem !important;
    }
    
    /* Navbar Extra Small */
    .navbar-brand {
        font-size: 1rem !important;
        line-height: 1.2;
    }
    
    .navbar-nav .nav-link {
        padding: var(--space-3) !important;
        font-size: 0.8125rem;
    }
    
    /* Forms Extra Small */
    .form-control,
    .form-select {
        padding: var(--space-3);
        font-size: 0.8125rem;
        min-height: 42px;
    }
    
    /* Buttons Extra Small */
    .btn {
        padding: var(--space-3);
        font-size: 0.8125rem;
        min-height: 42px;
        border-radius: var(--radius-md);
    }
    
    .btn-sm {
        padding: var(--space-2);
        font-size: 0.75rem;
        min-height: 36px;
    }
    
    /* Card Extra Small */
    .card {
        border-radius: var(--radius-lg);
        margin-bottom: var(--space-4);
    }
    
    .card-header {
        padding: var(--space-3);
        font-size: 0.9375rem;
    }
    
    .card-body {
        padding: var(--space-3);
    }
    
    /* Table Extra Small */
    .table {
        min-width: 500px;
        font-size: 0.75rem;
    }
    
    .table thead th {
        padding: var(--space-2);
        font-size: 0.6875rem;
    }
    
    .table tbody td {
        padding: var(--space-2);
        font-size: 0.75rem;
    }
    
    /* Grid Adjustments */
    .row.g-4 {
        --bs-gutter-x: 1rem;
        --bs-gutter-y: 1rem;
    }
    
    .mb-5 {
        margin-bottom: var(--space-8) !important;
    }
    
    .mt-4 {
        margin-top: var(--space-6) !important;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Touch-friendly interactions */
    .btn,
    .form-control,
    .form-select,
    .nav-link {
        min-height: 44px;
    }
    
    .btn-sm {
        min-height: 40px;
    }
    
    /* Hover states for touch devices */
    .card:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
    }
    
    .stats-card:hover {
        transform: none;
        box-shadow: var(--shadow-md);
    }
    
    .navbar-nav .nav-link:hover {
        background-color: var(--primary-50);
    }
}

/* Landscape Phone Orientation */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .navbar {
        padding: var(--space-2) 0;
    }
    
    .stats-card .card-body {
        padding: var(--space-3);
    }
    
    .container {
        margin-top: var(--space-2) !important;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .table {
        border-width: 0.5px;
    }
    
    .card {
        border-width: 0.5px;
    }
    
    .btn {
        border-width: 0.5px;
    }
}

/* Modern Statistics Cards */
.modern-stat-card {
    position: relative;
    background: white;
    border-radius: 20px;
    padding: 2rem;
    height: 180px;
    border: none;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

.modern-stat-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modern-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    transition: height 0.3s ease;
}

.modern-stat-card:hover::before {
    height: 8px;
}

.card-primary::before {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-success::before {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card-warning::before {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.stat-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    opacity: 0.2;
}

.card-primary .stat-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.card-success .stat-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.card-warning .stat-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.modern-stat-card:hover .stat-icon {
    opacity: 1;
    transform: scale(1.1);
}

.stat-content {
    position: relative;
    z-index: 2;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: #10b981;
    font-weight: 500;
}

.stat-trend i {
    font-size: 0.7rem;
}

.stat-overlay {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    transition: left 0.5s ease;
    pointer-events: none;
}

.modern-stat-card:hover .stat-overlay {
    left: 0;
}

/* Enhanced Card Hover Effects */
.modern-stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.03) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-primary::after {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.03) 100%);
}

.card-success::after {
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.03) 0%, rgba(245, 87, 108, 0.03) 100%);
}

.card-warning::after {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.03) 0%, rgba(0, 242, 254, 0.03) 100%);
}

.modern-stat-card:hover::after {
    opacity: 1;
}

/* Responsive Design for Stats Cards */
@media (max-width: 768px) {
    .modern-stat-card {
        height: 160px;
        padding: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .modern-stat-card {
        height: 140px;
        padding: 1.25rem;
        text-align: center;
    }
    
    .stat-icon {
        position: relative;
        top: auto;
        right: auto;
        margin: 0 auto 1rem;
        opacity: 0.8;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
}