/**
 * ============================================================================
 * PharmAssist Error States Styles
 * ============================================================================
 * Location: public_html/styles/error-states.css
 * 
 * Features:
 * - Error message containers
 * - Inline field errors
 * - Full-page error states
 * - Error boundaries
 * - Offline banner
 * - Dark/light theme support
 * 
 * @version 1.0.0
 * @created February 2026
 * ============================================================================
 */

/* ============================================================================
   CSS VARIABLES
   ============================================================================ */

:root {
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;
    --info-color: #3b82f6;
    --error-bg: #1a0f0f;
    --error-border: #3a1a1a;
}

body.light-mode {
    --error-color: #dc2626;
    --warning-color: #d97706;
    --success-color: #059669;
    --info-color: #2563eb;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
}

/* ============================================================================
   ERROR NOTIFICATION CONTAINER
   ============================================================================ */

#error-notification-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
}

/* ============================================================================
   ERROR NOTIFICATIONS
   ============================================================================ */

.error-notification {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    border-left: 4px solid var(--error-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: error-slide-in 0.3s ease;
    position: relative;
}

body.light-mode .error-notification {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

@keyframes error-slide-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.error-notification-fade-out {
    animation: error-fade-out 0.3s ease forwards;
}

@keyframes error-fade-out {
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

/* Notification types */
.error-notification-error {
    --error-border: #3a1a1a;
    border-left-color: var(--error-color);
}

body.light-mode .error-notification-error {
    --error-border: #fecaca;
}

.error-notification-warning {
    --error-border: #3a2a1a;
    border-left-color: var(--warning-color);
}

body.light-mode .error-notification-warning {
    --error-bg: #fffbeb;
    --error-border: #fed7aa;
}

.error-notification-success {
    --error-border: #1a3a1a;
    border-left-color: var(--success-color);
}

body.light-mode .error-notification-success {
    --error-bg: #f0fdf4;
    --error-border: #bbf7d0;
}

.error-notification-info {
    --error-border: #1a2a3a;
    border-left-color: var(--info-color);
}

body.light-mode .error-notification-info {
    --error-bg: #eff6ff;
    --error-border: #bfdbfe;
}

/* Notification elements */
.error-notification-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.error-notification-content {
    flex: 1;
}

.error-notification-message {
    color: #ffffff;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 8px;
}

body.light-mode .error-notification-message {
    color: #1e293b;
}

.error-close-btn {
    background: none;
    border: none;
    color: #a0a0a0;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.error-close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

body.light-mode .error-close-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #1e293b;
}

.error-retry-btn {
    background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.error-retry-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}

/* ============================================================================
   OFFLINE BANNER
   ============================================================================ */

.offline-banner {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #2a1a1a 100%);
    border-bottom: 2px solid var(--warning-color);
    padding: 12px 24px;
    z-index: 9999;
    animation: offline-slide-down 0.3s ease;
}

body.light-mode .offline-banner {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
}

@keyframes offline-slide-down {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

.offline-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: #ffffff;
    font-size: 14px;
    font-weight: 500;
}

body.light-mode .offline-banner-content {
    color: #92400e;
}

.offline-icon {
    font-size: 18px;
}

/* ============================================================================
   INLINE FIELD ERRORS
   ============================================================================ */

.field-error {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--error-color);
    font-size: 13px;
    margin-top: 4px;
}

.field-error::before {
    content: '⚠';
    font-size: 14px;
}

.input-error {
    border-color: var(--error-color) !important;
    background: rgba(239, 68, 68, 0.05) !important;
}

.input-error:focus {
    outline-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ============================================================================
   ERROR BOUNDARY
   ============================================================================ */

.error-boundary-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    padding: 40px 20px;
    background: #141414;
    border: 1px solid #2a2a2a;
    border-radius: 12px;
}

body.light-mode .error-boundary-fallback {
    background: #f9fafb;
    border-color: #e5e7eb;
}

.error-boundary-content {
    text-align: center;
    max-width: 400px;
}

.error-boundary-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.error-boundary-content h3 {
    color: #ffffff;
    font-size: 20px;
    margin-bottom: 8px;
}

body.light-mode .error-boundary-content h3 {
    color: #1e293b;
}

.error-boundary-content p {
    color: #a0a0a0;
    font-size: 14px;
    margin-bottom: 20px;
}

body.light-mode .error-boundary-content p {
    color: #64748b;
}

/* ============================================================================
   FULL PAGE ERROR
   ============================================================================ */

.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 40px 20px;
    text-align: center;
}

.error-page-icon {
    font-size: 80px;
    margin-bottom: 24px;
}

.error-page h1 {
    color: #ffffff;
    font-size: 32px;
    margin-bottom: 12px;
}

body.light-mode .error-page h1 {
    color: #1e293b;
}

.error-page p {
    color: #a0a0a0;
    font-size: 16px;
    margin-bottom: 32px;
    max-width: 500px;
}

body.light-mode .error-page p {
    color: #64748b;
}

.error-page-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.error-page-btn {
    background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    color: #ffffff;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.error-page-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.error-page-btn.secondary {
    background: #2a2a2a;
}

body.light-mode .error-page-btn.secondary {
    background: #e5e7eb;
    color: #1e293b;
}

/* ============================================================================
   FORM VALIDATION SUMMARY
   ============================================================================ */

.validation-summary {
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    border-left: 4px solid var(--error-color);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
}

.validation-summary-title {
    color: var(--error-color);
    font-weight: 600;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.validation-summary-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.validation-summary-list li {
    color: #ffffff;
    font-size: 14px;
    padding: 4px 0;
    padding-left: 20px;
    position: relative;
}

body.light-mode .validation-summary-list li {
    color: #1e293b;
}

.validation-summary-list li::before {
    content: '•';
    position: absolute;
    left: 8px;
    color: var(--error-color);
}

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

@media (max-width: 768px) {
    #error-notification-container {
        right: 10px;
        left: 10px;
        max-width: none;
    }

    .error-notification {
        padding: 12px;
    }

    .offline-banner {
        padding: 10px 16px;
    }

    .error-page h1 {
        font-size: 24px;
    }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    .error-notification,
    .offline-banner,
    .error-retry-btn,
    .error-page-btn {
        animation: none;
        transition: none;
    }
}

/* Print styles */
@media print {
    #error-notification-container,
    .offline-banner,
    .error-boundary-fallback {
        display: none !important;
    }
}