/**
 * Auth Admin - Main Stylesheet
 * 
 * This file contains global styles, CSS variables for theming,
 * and common component styles.
 * 
 * Color scheme can be customized by overriding CSS variables.
 */

/* =============================================================================
   CSS VARIABLES - THEME CONFIGURATION
   ============================================================================= */

:root {
    /* Primary Colors - Blue Theme */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-active: #1e40af;
    --color-primary-light: #dbeafe;
    --color-primary-dark: #1e3a8a;
    
    /* Secondary Colors */
    --color-secondary: #64748b;
    --color-secondary-hover: #475569;
    --color-secondary-light: #f1f5f9;
    
    /* Accent Colors */
    --color-accent: #0ea5e9;
    --color-accent-hover: #0284c7;
    
    /* Status Colors */
    --color-success: #16a34a;
    --color-success-light: #dcfce7;
    --color-success-dark: #166534;
    
    --color-warning: #ca8a04;
    --color-warning-light: #fef9c3;
    --color-warning-dark: #854d0e;
    
    --color-danger: #dc2626;
    --color-danger-light: #fee2e2;
    --color-danger-dark: #991b1b;
    
    --color-info: #0891b2;
    --color-info-light: #cffafe;
    --color-info-dark: #164e63;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Background Colors */
    --bg-body: var(--color-gray-100);
    --bg-content: var(--color-white);
    --bg-sidebar: var(--color-gray-900);
    --bg-header: var(--color-white);
    --bg-card: var(--color-white);
    --bg-input: var(--color-white);
    --bg-hover: var(--color-gray-50);
    
    /* Text Colors */
    --text-primary: var(--color-gray-900);
    --text-secondary: var(--color-gray-600);
    --text-muted: var(--color-gray-400);
    --text-inverse: var(--color-white);
    --text-link: var(--color-primary);
    --text-link-hover: var(--color-primary-hover);
    
    /* Border Colors */
    --border-color: var(--color-gray-200);
    --border-color-light: var(--color-gray-100);
    --border-color-dark: var(--color-gray-300);
    --border-focus: var(--color-primary);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 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);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-full: 9999px;
    
    /* Sidebar Dimensions */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    
    /* Header Dimensions */
    --header-height: 64px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Font Family */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', 'Consolas', 'Liberation Mono', 'Menlo', monospace;
    
    /* Font Sizes */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Z-Index Layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* =============================================================================
   BASE STYLES
   ============================================================================= */

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Selection */
::selection {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* Links */
a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--text-link-hover);
}

/* =============================================================================
   LAYOUT - APP (AUTHENTICATED)
   ============================================================================= */

#app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
#app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-sidebar);
    color: var(--text-inverse);
    z-index: var(--z-fixed);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    overflow: hidden;
}

#app-sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

/* Sidebar Brand */
.sidebar-brand {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    min-height: var(--header-height);
}

.sidebar-brand-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.sidebar-brand-text {
    margin-left: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
    overflow: hidden;
}

#app-sidebar.collapsed .sidebar-brand-text {
    opacity: 0;
    width: 0;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.nav-section {
    margin-bottom: var(--spacing-lg);
}

.nav-section-title {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    white-space: nowrap;
    overflow: hidden;
}

#app-sidebar.collapsed .nav-section-title {
    opacity: 0;
}

.nav-item {
    display: block;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    text-decoration: none;
}

.nav-link:hover {
    color: var(--text-inverse);
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--text-inverse);
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--color-primary);
}

.nav-link-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.nav-link-text {
    margin-left: var(--spacing-md);
    white-space: nowrap;
    overflow: hidden;
}

#app-sidebar.collapsed .nav-link-text {
    opacity: 0;
    width: 0;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Sidebar Toggle Button */
#btn-sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: var(--spacing-sm);
    color: var(--color-gray-400);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

#btn-sidebar-toggle:hover {
    color: var(--text-inverse);
}

/* Main Content Area */
#app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

body.sidebar-collapsed #app-main {
    margin-left: var(--sidebar-collapsed-width);
}

/* Header */
#app-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-xl);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
}

/* Breadcrumb */
#app-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item a {
    color: var(--text-secondary);
}

.breadcrumb-item a:hover {
    color: var(--text-primary);
}

.breadcrumb-separator {
    margin: 0 var(--spacing-xs);
    color: var(--text-muted);
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

/* User Dropdown */
#user-dropdown {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-dropdown-toggle:hover {
    background-color: var(--bg-hover);
    border-color: var(--border-color-dark);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.user-info {
    text-align: left;
}

.user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Content Area */
#app-content {
    flex: 1;
    padding: var(--spacing-xl);
}

/* Footer */
#app-footer {
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-align: center;
}

/* =============================================================================
   LAYOUT - GUEST (UNAUTHENTICATED)
   ============================================================================= */

#guest-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 50%, var(--color-primary-dark) 100%);
    padding: var(--spacing-xl);
}

.guest-container {
    width: 100%;
    max-width: 420px;
}

#guest-brand {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-inverse);
}

.brand-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-xl);
    font-size: 2rem;
}

.brand-name {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
}

#guest-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
}

#guest-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

#guest-footer p {
    margin: 0;
}

/* =============================================================================
   CARDS
   ============================================================================= */

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    color: var(--text-primary);
}

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

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--color-gray-50);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* =============================================================================
   PAGE HEADER
   ============================================================================= */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-md);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: var(--spacing-xs) 0 0;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* =============================================================================
   BUTTONS
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--text-inverse);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--text-inverse);
}

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

/* Secondary Button */
.btn-secondary {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--text-inverse);
}

.btn-secondary:hover {
    background-color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    color: var(--text-inverse);
}

/* Outline Buttons */
.btn-outline-primary {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-primary:hover {
    background-color: var(--color-primary);
    color: var(--text-inverse);
}

.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--border-color-dark);
    color: var(--text-secondary);
}

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

/* Danger Button */
.btn-danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: var(--text-inverse);
}

.btn-danger:hover {
    background-color: var(--color-danger-dark);
    border-color: var(--color-danger-dark);
    color: var(--text-inverse);
}

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

.btn-outline-danger:hover {
    background-color: var(--color-danger);
    color: var(--text-inverse);
}

/* Success Button */
.btn-success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: var(--text-inverse);
}

.btn-success:hover {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
    color: var(--text-inverse);
}

/* Ghost Button (minimal) */
.btn-ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background-color: var(--color-gray-100);
    color: var(--text-primary);
}

/* Icon Button */
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
}

.btn-icon.btn-lg {
    width: 44px;
    height: 44px;
}

/* =============================================================================
   FORMS
   ============================================================================= */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

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

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--color-gray-100);
    color: var(--text-secondary);
    cursor: not-allowed;
}

.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--color-danger-light);
}

/* Form Select */
.form-select {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 2.5rem;
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-input);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    appearance: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

/* Form Textarea */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* Form Checkbox & Radio */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin: 2px 0 0;
    appearance: none;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color-dark);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 12px;
}

.form-check-input[type="radio"]:checked {
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='8' cy='8' r='4'/%3e%3c/svg%3e");
}

.form-check-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
}

/* Form Switch */
.form-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-switch-input {
    position: relative;
    width: 44px;
    height: 24px;
    appearance: none;
    background-color: var(--color-gray-300);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.form-switch-input::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.form-switch-input:checked {
    background-color: var(--color-primary);
}

.form-switch-input:checked::before {
    transform: translateX(20px);
}

.form-switch-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Form Help Text */
.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Form Error */
.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-danger);
}

/* Input Group */
.input-group {
    display: flex;
    align-items: stretch;
}

.input-group .form-control {
    flex: 1;
    min-width: 0;
}

.input-group .form-control:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.input-group .form-control:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    background-color: var(--color-gray-100);
    border: 1px solid var(--border-color);
}

.input-group-text:first-child {
    border-right: 0;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group-text:last-child {
    border-left: 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* =============================================================================
   TABLES
   ============================================================================= */

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-card);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table th,
.data-table td {
    padding: var(--spacing-md);
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    background-color: var(--color-gray-50);
    white-space: nowrap;
}

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

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

/* Sortable Headers */
.data-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.data-table th.sortable:hover {
    background-color: var(--color-gray-100);
}

.sort-icon {
    margin-left: var(--spacing-xs);
    opacity: 0.3;
}

.data-table th.sorted .sort-icon {
    opacity: 1;
    color: var(--color-primary);
}

/* Row Actions */
.table-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    justify-content: flex-end;
}

/* Empty State */
.table-empty {
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--text-muted);
}

.table-empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-300);
}

/* =============================================================================
   ALERTS & FLASH MESSAGES
   ============================================================================= */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-icon {
    flex-shrink: 0;
    font-size: 1.25rem;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.alert-message {
    font-size: var(--font-size-sm);
}

.alert-dismiss {
    flex-shrink: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: inherit;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.alert-dismiss:hover {
    opacity: 1;
}

/* Alert Variants */
.alert-success {
    background-color: var(--color-success-light);
    color: var(--color-success-dark);
    border: 1px solid var(--color-success);
}

.alert-warning {
    background-color: var(--color-warning-light);
    color: var(--color-warning-dark);
    border: 1px solid var(--color-warning);
}

.alert-danger {
    background-color: var(--color-danger-light);
    color: var(--color-danger-dark);
    border: 1px solid var(--color-danger);
}

.alert-info {
    background-color: var(--color-info-light);
    color: var(--color-info-dark);
    border: 1px solid var(--color-info);
}

/* Toast Notifications (fixed position) */
#toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.toast {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    animation: slideInRight var(--transition-normal);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* =============================================================================
   BADGES & TAGS
   ============================================================================= */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.125rem var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.badge-secondary {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

.badge-success {
    background-color: var(--color-success-light);
    color: var(--color-success-dark);
}

.badge-warning {
    background-color: var(--color-warning-light);
    color: var(--color-warning-dark);
}

.badge-danger {
    background-color: var(--color-danger-light);
    color: var(--color-danger-dark);
}

.badge-info {
    background-color: var(--color-info-light);
    color: var(--color-info-dark);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
}

.status-active .status-dot {
    background-color: var(--color-success);
}

.status-inactive .status-dot {
    background-color: var(--color-gray-400);
}

.status-locked .status-dot {
    background-color: var(--color-danger);
}

.status-pending .status-dot {
    background-color: var(--color-warning);
}

/* =============================================================================
   MODALS
   ============================================================================= */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal {
    background-color: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    z-index: var(--z-modal);
    animation: modalSlideIn var(--transition-normal);
}

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

.modal-lg {
    max-width: 700px;
}

.modal-xl {
    max-width: 900px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--color-gray-50);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* =============================================================================
   DROPDOWN MENUS
   ============================================================================= */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    padding: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    text-decoration: none;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
}

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

.dropdown-item-icon {
    color: var(--text-muted);
    width: 20px;
}

.dropdown-item-danger {
    color: var(--color-danger);
}

.dropdown-item-danger:hover {
    background-color: var(--color-danger-light);
    color: var(--color-danger-dark);
}

.dropdown-divider {
    height: 1px;
    margin: var(--spacing-xs) 0;
    background-color: var(--border-color);
}

/* =============================================================================
   PAGINATION
   ============================================================================= */

.pagination {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pagination-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination-item:hover:not(.disabled):not(.active) {
    background-color: var(--bg-hover);
    border-color: var(--border-color-dark);
    color: var(--text-primary);
}

.pagination-item.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--text-inverse);
}

.pagination-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-left: var(--spacing-md);
}

/* =============================================================================
   STAT CARDS (Dashboard)
   ============================================================================= */

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
}

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

.stat-icon-success {
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.stat-icon-warning {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}

.stat-icon-danger {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.stat-change {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-change-positive {
    color: var(--color-success);
}

.stat-change-negative {
    color: var(--color-danger);
}

/* =============================================================================
   SEARCH & FILTERS
   ============================================================================= */

.search-box {
    position: relative;
}

.search-box-input {
    padding-left: 2.5rem;
}

.search-box-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.filter-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

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

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 14px;
    height: 14px;
    border-width: 2px;
}

.spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

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

.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-gray-200) 25%,
        var(--color-gray-100) 50%,
        var(--color-gray-200) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* =============================================================================
   UTILITIES
   ============================================================================= */

/* Text Utilities */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-danger { color: var(--color-danger) !important; }

.text-sm { font-size: var(--font-size-sm) !important; }
.text-xs { font-size: var(--font-size-xs) !important; }
.text-lg { font-size: var(--font-size-lg) !important; }

.font-medium { font-weight: var(--font-weight-medium) !important; }
.font-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-bold { font-weight: var(--font-weight-bold) !important; }

.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Spacing Utilities */
.m-0 { margin: 0 !important; }
.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }

.p-0 { padding: 0 !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-3 { padding: var(--spacing-md) !important; }
.p-4 { padding: var(--spacing-lg) !important; }

/* Display Utilities */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.align-items-center { align-items: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-end { justify-content: flex-end !important; }
.gap-1 { gap: var(--spacing-xs) !important; }
.gap-2 { gap: var(--spacing-sm) !important; }
.gap-3 { gap: var(--spacing-md) !important; }
.gap-4 { gap: var(--spacing-lg) !important; }

/* Width Utilities */
.w-100 { width: 100% !important; }
.w-auto { width: auto !important; }

/* Visibility */
.invisible { visibility: hidden !important; }
.visible { visibility: visible !important; }

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

@media (max-width: 991.98px) {
    #app-sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }
    
    #app-sidebar.mobile-open {
        transform: translateX(0);
    }
    
    #app-main {
        margin-left: 0;
    }
    
    body.sidebar-collapsed #app-main {
        margin-left: 0;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .page-actions {
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 767.98px) {
    :root {
        --spacing-xl: 1.5rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .filter-group .form-select,
    .filter-group .form-control {
        flex: 1;
    }
    
    .user-info {
        display: none;
    }
    
    .modal {
        margin: var(--spacing-md);
        max-width: calc(100% - var(--spacing-lg) * 2);
    }
}

/* =============================================================================
   PRINT STYLES
   ============================================================================= */

@media print {
    #app-sidebar,
    #app-header,
    #app-footer,
    .page-actions,
    .table-actions,
    .btn,
    .pagination {
        display: none !important;
    }
    
    #app-main {
        margin-left: 0 !important;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}