/**
 * Dark Mode Stylesheet - W3 Business Procedures v2.1
 * Enhanced dark theme with smooth transitions
 */

/* Dark Mode Variables */
[data-theme="dark"] {
    /* Primary Colors (adjusted for dark) */
    --color-primary-50: #1e3a8a;
    --color-primary-100: #1d4ed8;
    --color-primary-500: #3b82f6;
    --color-primary-600: #60a5fa;
    --color-primary-700: #93c5fd;
    --color-primary-900: #dbeafe;

    /* Semantic Colors (adjusted) */
    --color-success: #10b981;
    --color-success-light: #065f46;
    --color-warning: #f59e0b;
    --color-warning-light: #78350f;
    --color-danger: #ef4444;
    --color-danger-light: #7f1d1d;
    --color-info: #06b6d4;
    --color-info-light: #164e63;

    /* Neutral Colors (inverted) */
    --color-white: #111827;
    --color-gray-50: #1f2937;
    --color-gray-100: #374151;
    --color-gray-200: #4b5563;
    --color-gray-300: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-500: #d1d5db;
    --color-gray-600: #e5e7eb;
    --color-gray-700: #f3f4f6;
    --color-gray-800: #f9fafb;
    --color-gray-900: #ffffff;

    /* Shadows (darker) */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* Smooth transition for theme switch */
* {
    transition: background-color 0.3s ease, 
                color 0.3s ease, 
                border-color 0.3s ease,
                box-shadow 0.3s ease;
}

/* Preserve specific animations */
.loading-spinner,
.pulse,
.fade-in,
.slide-up {
    transition: none !important;
}

/* Dark mode body */
[data-theme="dark"] body {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    color: var(--color-gray-900);
}

/* Dark cards and surfaces */
[data-theme="dark"] .card,
[data-theme="dark"] .modal__content,
[data-theme="dark"] .network-diagram,
[data-theme="dark"] .ip-checker,
[data-theme="dark"] .contact-card {
    background: var(--color-gray-100);
    border-color: var(--color-gray-200);
}

[data-theme="dark"] .card__header,
[data-theme="dark"] .card__footer,
[data-theme="dark"] .contact-card__header {
    background: var(--color-gray-200);
    border-color: var(--color-gray-300);
}

/* Dark inputs */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: var(--color-gray-200);
    border-color: var(--color-gray-300);
    color: var(--color-gray-900);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--color-gray-500);
}

/* Dark alerts - preserve readability */
[data-theme="dark"] .alert--info {
    background: rgba(6, 182, 212, 0.15);
    border-color: var(--color-info);
}

[data-theme="dark"] .alert--warning {
    background: rgba(245, 158, 11, 0.15);
    border-color: var(--color-warning);
}

[data-theme="dark"] .alert--success {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--color-success);
}

[data-theme="dark"] .alert--danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--color-danger);
}

/* Dark navigation */
[data-theme="dark"] .navigation {
    background: var(--color-gray-100);
    border-color: var(--color-gray-200);
}

[data-theme="dark"] .navigation__link {
    color: var(--color-gray-700);
}

[data-theme="dark"] .navigation__link:hover {
    background: var(--color-gray-200);
    color: var(--color-primary-600);
}

[data-theme="dark"] .navigation__link.active {
    background: var(--color-primary-600);
    color: var(--color-white);
}

/* Dark footer */
[data-theme="dark"] .footer {
    background: var(--color-gray-50);
}

/* Code blocks */
[data-theme="dark"] code,
[data-theme="dark"] pre {
    background: var(--color-gray-200);
    color: var(--color-success);
}

/* Loading overlay */
[data-theme="dark"] .loading-overlay {
    background: rgba(17, 24, 39, 0.9);
}

/* Network nodes */
[data-theme="dark"] .network-node {
    background: var(--color-gray-100);
    border-color: var(--color-gray-300);
}

[data-theme="dark"] .network-node:hover {
    background: var(--color-gray-200);
}

/* Status indicators */
[data-theme="dark"] .status-indicator {
    background: var(--color-gray-200);
}

/* Steps */
[data-theme="dark"] .step {
    background: var(--color-gray-200);
}

[data-theme="dark"] .step:hover {
    background: var(--color-gray-300);
}

/* Preserve important text colors */
[data-theme="dark"] strong {
    color: var(--color-gray-900);
}

/* Image brightness adjustment */
[data-theme="dark"] img {
    opacity: 0.9;
}

/* Scrollbar dark mode (Webkit) */
[data-theme="dark"] ::-webkit-scrollbar {
    background: var(--color-gray-100);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}