/* ESP Management System - Professional Oil & Gas Styling */
/* Oil Industry Color Palette and Professional Design */

:root {
    /* Oil Industry Color Scheme */
    --oil-blue-primary: #1e40af;
    --oil-blue-secondary: #3b82f6;
    --oil-blue-light: #93c5fd;
    --gas-red-primary: #dc2626;
    --gas-red-secondary: #ef4444;
    --gas-orange: #ea580c;
    
    /* Professional Grays */
    --steel-gray: #475569;
    --slate-gray: #64748b;
    --light-gray: #f8fafc;
    --border-gray: #e2e8f0;
    
    /* Status Colors */
    --success-green: #059669;
    --warning-amber: #d97706;
    --danger-red: #dc2626;
    --info-blue: #0ea5e9;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 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);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: #1f2937;
    background-color: var(--light-gray);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    direction: ltr; /* English LTR layout */
}

/* Professional Button Styles */
.btn-primary {
    background: linear-gradient(135deg, var(--oil-blue-primary), var(--oil-blue-secondary));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e3a8a, var(--oil-blue-primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--gas-red-primary), var(--gas-red-secondary));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #b91c1c, var(--gas-red-primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--oil-blue-primary);
    border: 2px solid var(--oil-blue-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-outline:hover {
    background: var(--oil-blue-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Professional Card Styles */
.card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.card-header {
    background: linear-gradient(135deg, var(--steel-gray), var(--slate-gray));
    color: white;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gray);
}

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

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

/* Oil Industry Status Indicators */
.status-operational {
    background: linear-gradient(135deg, var(--success-green), #10b981);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.status-warning {
    background: linear-gradient(135deg, var(--warning-amber), #f59e0b);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.status-critical {
    background: linear-gradient(135deg, var(--danger-red), var(--gas-red-secondary));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.status-info {
    background: linear-gradient(135deg, var(--info-blue), #3b82f6);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

/* Professional Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: #374151;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-gray);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    background: white;
    transition: var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--oil-blue-secondary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:invalid {
    border-color: var(--danger-red);
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-gray);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    background: white url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e") no-repeat right 0.75rem center/1.5em 1.5em;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    transition: var(--transition-fast);
}

.form-select:focus {
    outline: none;
    border-color: var(--oil-blue-secondary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Professional Table Styles */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.table thead th {
    background: linear-gradient(135deg, var(--steel-gray), var(--slate-gray));
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: var(--font-weight-semibold);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-gray);
    font-size: 0.875rem;
}

.table tbody tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

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

/* Oil Industry Metric Displays */
.metric-display {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border-left: 4px solid var(--oil-blue-primary);
}

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

.metric-value {
    font-size: 2rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--oil-blue-primary);
    line-height: 1;
}

.metric-unit {
    font-size: 0.875rem;
    font-weight: var(--font-weight-normal);
    color: var(--slate-gray);
    margin-left: 0.25rem;
}

.metric-label {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: #374151;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Professional Navigation */
.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: #374151;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
    font-weight: var(--font-weight-medium);
}

.nav-link:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--oil-blue-primary);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--oil-blue-primary), var(--oil-blue-secondary));
    color: white;
}

.nav-link i {
    margin-right: 0.5rem;
    width: 1.25rem;
}

/* Professional Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

.animate-slide-in {
    animation: slideIn 0.5s ease-out;
}

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

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    border: 3px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    border-top-color: var(--oil-blue-primary);
    animation: spin 1s ease-in-out infinite;
}

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

/* Professional Alert Messages */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #065f46;
    border-left: 4px solid var(--success-green);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #92400e;
    border-left: 4px solid var(--warning-amber);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
    border-left: 4px solid var(--danger-red);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    color: #1e40af;
    border-left: 4px solid var(--info-blue);
}

/* Mobile Responsive Utilities */
@media (max-width: 768px) {
    .mobile-hidden {
        display: none !important;
    }
    
    .mobile-full {
        width: 100% !important;
    }
    
    .mobile-stack {
        flex-direction: column !important;
    }
    
    .mobile-text-center {
        text-align: center !important;
    }
    
    .mobile-p-4 {
        padding: 1rem !important;
    }
    
    .mobile-gap-4 {
        gap: 1rem !important;
    }
}

/* Desktop Enhancements */
@media (min-width: 1024px) {
    .desktop-grid-4 {
        grid-template-columns: repeat(4, 1fr) !important;
    }
    
    .desktop-w-auto {
        width: auto !important;
    }
}

/* Print Styles */
@media print {
    .print-hidden {
        display: none !important;
    }
    
    .print-page-break {
        page-break-after: always;
    }
    
    .print-no-break {
        page-break-inside: avoid;
    }
    
    body {
        background: white !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #e5e7eb;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --oil-blue-primary: #000080;
        --gas-red-primary: #8B0000;
        --border-gray: #000000;
    }
    
    .card {
        border: 2px solid #000000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Visible Support for Accessibility */
.focus-visible:focus {
    outline: 2px solid var(--oil-blue-primary);
    outline-offset: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--slate-gray);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--steel-gray);
}

/* Professional Selection */
::selection {
    background: rgba(59, 130, 246, 0.2);
    color: var(--oil-blue-primary);
}

::-moz-selection {
    background: rgba(59, 130, 246, 0.2);
    color: var(--oil-blue-primary);
}