/* ============================================
   STAXCLOUD - Modern SaaS Design System
   Version: 3.0 (2025) - Classic Style (No Glass)
   ============================================ */

/* ============================================
   CSS VARIABLES - Design Tokens
   ============================================ */
:root {
    /* Primary Colors - Indigo/Blue */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    --primary-color: var(--primary-600);
    --primary-hover: var(--primary-700);
    --primary-light: var(--primary-50);
    --primary-dark: var(--primary-800);
    
    /* Success - Green */
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-200: #bbf7d0;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    --success-800: #166534;
    
    --success-color: var(--success-600);
    --success-light: var(--success-50);
    
    /* Warning - Amber */
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-200: #fde68a;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-800: #92400e;
    
    --warning-color: var(--warning-600);
    --warning-light: var(--warning-50);
    
    /* Danger - Red */
    --danger-50: #fef2f2;
    --danger-100: #fee2e2;
    --danger-200: #fecaca;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --danger-700: #b91c1c;
    --danger-800: #991b1b;
    
    --danger-color: var(--danger-600);
    --danger-light: var(--danger-50);
    
    /* Info - Sky Blue */
    --info-50: #f0f9ff;
    --info-100: #e0f2fe;
    --info-200: #bae6fd;
    --info-500: #0ea5e9;
    --info-600: #0284c7;
    --info-800: #075985;
    
    --info-color: var(--info-600);
    --info-light: var(--info-50);
    
    /* 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;
    
    --secondary-color: var(--gray-600);
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-hover: #f3f4f6;
    --border-color: #e5e7eb;
    
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-700);
    --text-muted: var(--gray-600);
    --text-white: #ffffff;
    
    /* 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --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-size-4xl: 2.25rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-full: 9999px;
    
    /* 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);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
    box-sizing: border-box;
}

html {
    height: 100%;
}

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-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.page-header-title,
h2.page-header-title {
    color: var(--primary-color);
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.page-header-title i,
h2.page-header-title i {
    color: var(--primary-color);
    font-size: 1.1em;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); font-weight: var(--font-weight-medium); }

p {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.lead {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
}

small, .small {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

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

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

a:hover {
    color: var(--primary-hover);
    text-decoration: none;
}

a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ============================================
   NAVIGATION - Glass Navbar (Chrome Optimized)
   ============================================ */
.navbar {
    
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
    will-change: transform;
    transform: translateZ(0);
}

.navbar-dark {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    border-bottom: none;
}

.navbar-brand {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    color: var(--text-white) !important;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: opacity var(--transition-fast);
}

.navbar-brand:hover {
    opacity: 0.9;
}

.navbar-nav .nav-link {
    color: var(--text-white) !important;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--text-white) !important;
    transform: scale(1.02);
}

.navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
}

.navbar-dark .navbar-nav .dropdown-menu {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
}

.navbar-dark .navbar-nav .dropdown-item {
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-dark .navbar-nav .dropdown-item:hover,
.navbar-dark .navbar-nav .dropdown-item:focus {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.navbar-toggler {
    border: none;
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.25);
}

/* ============================================
   BUTTONS - iOS 26 Style
   ============================================ */
.btn {
    font-family: var(--font-family);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    padding: 0.75rem 1.5rem;
    border-radius: 16px;
    border: 1px solid transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.2);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

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

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-xs);
    border-radius: 14px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-base);
    border-radius: 18px;
}

/* Primary Button - iOS Blue */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%);
    border-color: var(--primary-hover);
    color: var(--text-white);
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
    box-shadow: var(--shadow-xs);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Success Button - iOS Green */
.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-700) 100%);
    border-color: var(--success-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-700) 0%, var(--success-color) 100%);
    border-color: var(--success-700);
    color: var(--text-white);
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-md);
}

.btn-success:active {
    transform: translateY(0) scale(0.98);
}

/* Danger Button - iOS Red */
.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, var(--danger-700) 100%);
    border-color: var(--danger-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-700) 0%, var(--danger-color) 100%);
    border-color: var(--danger-700);
    color: var(--text-white);
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-md);
}

.btn-danger:active {
    transform: translateY(0) scale(0.98);
}

/* Warning Button */
.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #E68900 100%);
    border-color: var(--warning-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-warning:hover {
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-md);
}

.btn-warning:active {
    transform: translateY(0) scale(0.98);
}

/* Info Button */
.btn-info {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-info:hover {
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-md);
}

.btn-info:active {
    transform: translateY(0) scale(0.98);
}

/* Secondary Button - Glass Style */
.btn-secondary {
    
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
    transform: translateY(0) scale(0.98);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-1px) scale(1.01);
}

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

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

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

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

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

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

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

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

/* Button Group */
.btn-group {
    display: inline-flex;
    gap: var(--spacing-xs);
}

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

.btn-group-vertical {
    flex-direction: column;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    overflow: hidden;
    position: relative;
    will-change: transform;
    transform: translateZ(0);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    opacity: 0.6;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px) scale(1.01);
    border-color: var(--border-color);
}

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

.card-header h5,
.card-header h4,
.card-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.card-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg);
}

/* Colored Cards */
.card.bg-primary,
.card.bg-success,
.card.bg-info,
.card.bg-warning {
    border: none;
    color: var(--text-white) !important;
    position: relative;
    overflow: hidden;
}

.card.bg-primary::before,
.card.bg-success::before,
.card.bg-info::before,
.card.bg-warning::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    
    z-index: 0;
}

.card.bg-primary {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
}

.card.bg-success {
    background: linear-gradient(135deg, var(--success-600) 0%, var(--success-700) 100%);
}

.card.bg-info {
    background: linear-gradient(135deg, var(--info-600) 0%, var(--info-500) 100%);
}

.card.bg-warning {
    background: linear-gradient(135deg, var(--warning-600) 0%, var(--warning-500) 100%);
}

.card.bg-primary .card-body,
.card.bg-success .card-body,
.card.bg-info .card-body,
.card.bg-warning .card-body,
.card.bg-primary .card-title,
.card.bg-success .card-title,
.card.bg-info .card-title,
.card.bg-warning .card-title,
.card.bg-primary h1,
.card.bg-success h1,
.card.bg-info h1,
.card.bg-warning h1,
.card.bg-primary h2,
.card.bg-success h2,
.card.bg-info h2,
.card.bg-warning h2,
.card.bg-primary h3,
.card.bg-success h3,
.card.bg-info h3,
.card.bg-warning h3,
.card.bg-primary h4,
.card.bg-success h4,
.card.bg-info h4,
.card.bg-warning h4,
.card.bg-primary h5,
.card.bg-success h5,
.card.bg-info h5,
.card.bg-warning h5,
.card.bg-primary h6,
.card.bg-success h6,
.card.bg-info h6,
.card.bg-warning h6,
.card.bg-primary p,
.card.bg-success p,
.card.bg-info p,
.card.bg-warning p,
.card.bg-primary small,
.card.bg-success small,
.card.bg-info small,
.card.bg-warning small,
.card.bg-primary span,
.card.bg-success span,
.card.bg-info span,
.card.bg-warning span,
.card.bg-primary .text-muted,
.card.bg-success .text-muted,
.card.bg-info .text-muted,
.card.bg-warning .text-muted {
    color: var(--text-white) !important;
    position: relative;
    z-index: 1;
}

.card.bg-primary i,
.card.bg-success i,
.card.bg-info i,
.card.bg-warning i {
    color: var(--text-white) !important;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.card.bg-primary:hover,
.card.bg-success:hover,
.card.bg-info:hover,
.card.bg-warning:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* Folder Cards */
.folder-card {
    position: relative;
    cursor: pointer;
    transition: all var(--transition-base);
}

.folder-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   FORMS - Glass Style
   ============================================ */
.form-label {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.form-control,
.form-select {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    width: 100%;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-100);
    background-color: var(--bg-primary);
}

.form-control::placeholder {
    color: var(--text-tertiary);
    opacity: 1;
}

.form-control:disabled,
.form-select:disabled {
    background: rgba(255, 255, 255, 0.5);
    cursor: not-allowed;
    opacity: 0.6;
}

.form-text {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    margin-top: 0.125rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--bg-primary);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    background-image: var(--bs-form-check-bg-image);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 0.7rem;
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

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

.form-check {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   TABLES - Glass Style
   ============================================ */
.table {
    width: 100%;
    color: var(--text-primary);
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
    
    background: rgba(255, 255, 255, 0.4);
}

.table tbody td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

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

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

.table-responsive {
    border-radius: var(--radius-lg);
    overflow: hidden;
    
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
}

/* ============================================
   PROGRESS BARS - iOS Style
   ============================================ */
.progress {
    height: 0.5rem;
    
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-inner);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(79, 70, 229, 0.3);
}

.progress-bar.bg-primary {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-hover) 100%);
}

.progress-bar.bg-success {
    background: linear-gradient(90deg, var(--success-color) 0%, var(--success-700) 100%);
}

.progress-bar.bg-warning {
    background: linear-gradient(90deg, var(--warning-color) 0%, #E68900 100%);
}

.progress-bar.bg-info {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-hover) 100%);
}

.progress-bar.bg-danger {
    background: linear-gradient(90deg, var(--danger-color) 0%, var(--danger-700) 100%);
}

.progress-bar-animated {
    animation: progressPulse 1.5s ease-in-out infinite;
}

@keyframes progressPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* ============================================
   BADGES - iOS Style
   ============================================ */
.badge {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-xs);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.bg-primary {
    background-color: var(--primary-color) !important;
    color: var(--text-white) !important;
}

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

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

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

.bg-info {
    background-color: var(--primary-color) !important;
    color: var(--text-white) !important;
}

.bg-secondary {
    background-color: var(--text-tertiary) !important;
    color: var(--text-white) !important;
}

/* ============================================
   ALERTS - Glass Style
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    
    background: var(--bg-primary);
}

.alert-primary {
    background-color: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-800);
}

.alert-success {
    background: rgba(52, 199, 89, 0.1);
    border-color: rgba(52, 199, 89, 0.3);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(255, 149, 0, 0.1);
    border-color: rgba(255, 149, 0, 0.3);
    color: var(--warning-color);
}

.alert-danger {
    background: rgba(255, 59, 48, 0.1);
    border-color: rgba(255, 59, 48, 0.3);
    color: var(--danger-color);
}

.alert-info {
    background-color: var(--info-50);
    border-color: var(--info-200);
    color: var(--info-800);
}

.alert .btn-close {
    margin-left: auto;
    opacity: 0.5;
}

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

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
}

.breadcrumb-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--text-tertiary);
    font-weight: var(--font-weight-normal);
    padding: 0 var(--spacing-xs);
}

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

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

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

/* ============================================
   UPLOAD AREAS - Glass Style
   ============================================ */
.upload-area,
.folder-drop-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    
    background: var(--bg-primary);
    transition: all var(--transition-base);
    cursor: pointer;
}

.upload-area:hover,
.folder-drop-area:hover {
    border-color: var(--primary-300);
    background-color: var(--primary-50);
}

.upload-area.dragover,
.folder-drop-area.dragover {
    border-color: var(--success-color);
    background-color: var(--success-50);
    box-shadow: 0 0 0 4px var(--success-100);
}

/* ============================================
   FILE LIST ITEMS
   ============================================ */
.file-list-item {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
    
}

.file-list-item:hover {
    background-color: var(--bg-hover);
}

.file-list-item:last-child {
    border-bottom: none;
}

.file-icon {
    font-size: var(--font-size-lg);
    margin-right: var(--spacing-md);
}

.selection-checkbox {
    transform: scale(1.1);
    cursor: pointer;
}

/* ============================================
   LIST GROUPS - Glass Style
   ============================================ */
.list-group {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    
    background: var(--bg-primary);
}

.list-group-item {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background-color: transparent;
    transition: all var(--transition-fast);
}

.list-group-item:last-child {
    border-bottom: none;
}

.list-group-item:hover {
    background-color: var(--bg-hover);
}

.list-group-flush {
    border: none;
}

.list-group-flush .list-group-item {
    border-left: none;
    border-right: none;
}

/* ============================================
   HERO SECTION - Glass Style
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    color: var(--text-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    will-change: transform;
    transform: translateZ(0);
}

.hero-section h1 {
    color: var(--text-white);
    font-weight: var(--font-weight-bold);
}

.hero-section .lead {
    color: rgba(255, 255, 255, 0.9);
}

/* ============================================
   DROPDOWN MENUS - Glass Style
   ============================================ */
.dropdown-menu {
    
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    min-width: 200px;
}

.dropdown-item {
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

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

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

.dropdown-item.text-danger:hover {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--danger-700);
}

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

/* ============================================
   STATISTICS CARDS
   ============================================ */
.stats-card {
    border: none;
    color: var(--text-white);
}

/* ============================================
   FILE PREVIEW
   ============================================ */
.file-preview {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ============================================
   CUSTOM SCROLLBAR - iOS Style
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

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

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinner-border {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

.spinner-border-sm {
    width: 0.875rem;
    height: 0.875rem;
    border-width: 1.5px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cursor-pointer {
    cursor: pointer;
}

.user-select-none {
    user-select: none;
}

/* Gap utilities */
.gap-2 {
    gap: var(--spacing-sm);
}

.gap-3 {
    gap: var(--spacing-md);
}

/* ============================================
   FOOTER - Glass Style
   ============================================ */
footer {
    
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

footer .text-muted {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

/* ============================================
   UPLOAD PROGRESS - Glass Style
   ============================================ */
#uploadProgress,
#folderDropZone #ddUploadProgress {
    
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

#uploadProgress .progress,
#folderDropZone .progress {
    height: 0.75rem;
    margin-bottom: var(--spacing-md);
}

#fileList {
    max-height: 300px;
    overflow-y: auto;
    border-radius: var(--radius-lg);
}

#currentFile {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

#speedInfo {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-weight: var(--font-weight-semibold);
    color: var(--success-color);
}

/* ============================================
   CODE VIEWER - Glass Style
   ============================================ */
.code-viewer {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 0.875rem;
    line-height: var(--line-height-relaxed);
    
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 70vh;
    overflow-y: auto;
    color: var(--text-primary);
    margin: 0;
}

.file-info {
    
    background: var(--bg-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.language-badge {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

/* User Row Hover */
.user-row {
    transition: background-color var(--transition-fast);
    cursor: pointer;
}

.user-row:hover {
    background-color: var(--bg-hover) !important;
}

.user-row:hover td {
    background-color: transparent !important;
}

/* Image Preview */
.img-fluid {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-height: 600px;
    object-fit: contain;
}

/* Text Content Preview */
pre.bg-light {
    
    background: var(--bg-primary) !important;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    max-height: 600px;
    overflow-y: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 0.875rem;
    line-height: var(--line-height-relaxed);
}

pre code {
    background: transparent;
    padding: 0;
    color: var(--text-primary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 575.98px) {
    :root {
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .navbar-brand {
        font-size: var(--font-size-lg);
    }
    
    .card-body {
        padding: var(--spacing-lg);
    }
    
    .card-header {
        padding: var(--spacing-md);
    }
    
    .btn {
        font-size: var(--font-size-xs);
        padding: 0.5rem 1rem;
    }
    
    .table thead th,
    .table tbody td {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .upload-area,
    .folder-drop-area {
        padding: var(--spacing-xl);
    }
    
    .hero-section {
        padding: var(--spacing-xl);
    }
}

@media (min-width: 576px) and (max-width: 767.98px) {
    .card-body {
        padding: var(--spacing-lg);
    }
}

@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .card:hover {
        transform: none;
    }
    
    .btn:active,
    .nav-link:active,
    .dropdown-item:active {
        opacity: 0.7;
        transform: scale(0.98);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .btn,
    .dropdown,
    .card-header .btn-group,
    footer {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--border-color);
        page-break-inside: avoid;
    }
    
    body {
        background: white;
    }
}