/* ===================================================================
   PROFESSIONAL THEME - Modern, Clean, Enterprise-Grade Design
   =================================================================== */

:root {
    /* Primary Color Palette - Professional Blue-Grey */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --primary-subtle: #dbeafe;
    
    /* Secondary & Accent Colors */
    --secondary-color: #64748b;
    --accent-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================================================
   TYPOGRAPHY
   =================================================================== */

body {
    font-family: var(--font-sans);
    font-size: 0.938rem;
    line-height: 1.6;
    color: var(--gray-700);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

.text-muted {
    color: var(--gray-500) !important;
}

/* ===================================================================
   NAVBAR - Modern, Professional
   =================================================================== */

.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    box-shadow: var(--shadow-md);
    padding: var(--space-md) 0;
    backdrop-filter: blur(10px);
    position: fixed !important;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1055 !important;
    transition: all 0.3s ease-in-out;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    transition: transform var(--transition-base);
}

.navbar-brand:hover {
    transform: translateY(-2px);
}

.navbar-brand i {
    color: rgba(255, 255, 255, 0.9);
    margin-right: var(--space-sm);
}

.nav-link {
    font-weight: 500;
    padding: var(--space-sm) var(--space-md) !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

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

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

/* ===================================================================
   CARDS - Elevated, Modern Design
   =================================================================== */

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

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

.card-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-lg);
    font-weight: 600;
    color: var(--gray-800);
}

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

.card-footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-md) var(--space-lg);
}

/* ===================================================================
   BUTTONS - Modern, Tactile Feel
   =================================================================== */

.btn {
    font-weight: 500;
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-lg);
    transition: all var(--transition-base);
    border: none;
    letter-spacing: 0.01em;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
}

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

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0891b2 100%);
    color: white;
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.813rem;
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.063rem;
}

/* ===================================================================
   TABLES - Clean, Professional
   =================================================================== */

.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background: var(--gray-50);
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.813rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--gray-200);
    padding: var(--space-md);
}

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

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

.table tbody td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

.table-responsive {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* ===================================================================
   BADGES - Refined, Modern
   =================================================================== */

.badge {
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    box-shadow: var(--shadow-sm);
}

.bg-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%) !important;
}

.bg-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%) !important;
}

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

.bg-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0891b2 100%) !important;
}

.bg-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--gray-600) 100%) !important;
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

/* ===================================================================
   FORMS - Clean, Modern Input Fields
   =================================================================== */

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

.form-control,
.form-select {
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    transition: all var(--transition-base);
    font-size: 0.938rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-subtle);
    outline: none;
}

.form-control:hover:not(:focus),
.form-select:hover:not(:focus) {
    border-color: var(--gray-400);
}

/* ===================================================================
   ALERTS - Professional, Informative
   =================================================================== */

.alert {
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid;
}

.alert-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-left-color: var(--success-color);
    color: #065f46;
}

.alert-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-left-color: var(--warning-color);
    color: #92400e;
}

.alert-danger {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border-left-color: var(--danger-color);
    color: #991b1b;
}

/* ===================================================================
   Enterprise Management quick-links
   Moved from templates/base.html to central stylesheet for reuse
   =================================================================== */
.ea-quick-links .row > [class*='col-'] { display: flex; }
.ea-quick-links .ea-btn-card {
    flex: 1 1 auto;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 0.65rem;
    border-radius: 0.5rem;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
    cursor: pointer;
    text-decoration: none;
    background: #fff;
    height: 100%;
    min-height: 84px;
    overflow: hidden;
}
.ea-quick-links .ea-btn-card:focus { outline: 3px solid rgba(13,110,253,0.12); }
.ea-quick-links .ea-btn-card .ea-icon { display:block; }
.ea-quick-links .ea-btn-card .ea-icon i { margin-bottom: 0.25rem; }
.ea-quick-links .ea-btn-card .ea-title { margin-top: 0.2rem; font-weight:600; color:#212529; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.ea-quick-links .ea-btn-card .ea-sub { display:block; font-size:0.82rem; color: #6c757d; }
.ea-quick-links .ea-btn-card:hover { transform: translateY(-4px); box-shadow: 0 8px 22px rgba(0,0,0,0.08); text-decoration:none; }
@media (max-width: 576px) {
    .ea-quick-links .ea-btn-card { min-height: 72px; padding: 0.45rem 0.5rem; }
    .ea-quick-links .ea-btn-card .ea-icon i { font-size: 1.2rem; }
    .ea-quick-links .ea-btn-card .ea-title { font-size: 0.95rem; }
    .ea-quick-links .ea-btn-card .ea-sub { display: none; }
}

.alert-info {
    background: linear-gradient(135deg, #cffafe 0%, #a5f3fc 100%);
    border-left-color: var(--info-color);
    color: #164e63;
}

/* ===================================================================
   MODALS - Refined, Professional
   =================================================================== */

.modal-content {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-lg) var(--space-xl);
}

.modal-title {
    font-weight: 600;
    color: var(--gray-900);
}

.modal-body {
    padding: var(--space-xl);
}

.modal-footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-lg) var(--space-xl);
}

/* ===================================================================
   PAGINATION - Modern, Clean
   =================================================================== */

.pagination {
    gap: var(--space-xs);
}

.page-link {
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
    padding: var(--space-sm) var(--space-md);
    transition: all var(--transition-base);
    margin: 0 2px;
}

.page-link:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
    color: var(--gray-900);
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

/* ===================================================================
   FOOTER - Subtle, Professional
   =================================================================== */

.footer {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-xl) 0;
    margin-top: var(--space-2xl);
}

/* ===================================================================
   UTILITIES & ANIMATIONS
   =================================================================== */

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

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

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

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.slide-up {
    animation: slideUp var(--transition-slow) ease-out;
}

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

.spinner-border {
    border-width: 2px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

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

@media (max-width: 768px) {
    :root {
        --space-lg: 1rem;
        --space-xl: 1.5rem;
    }
    
    .card-header,
    .card-body {
        padding: var(--space-md);
    }
    
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
}