:root {
            --primary-color: #e91e63;
            --secondary-color: #f8bbd9;
            --accent-color: #ad1457;
            --light-pink: #fce4ec;
            --light-blue: #e3f2fd;
            --light-green: #e8f5e9;
            --light-gray: #f5f5f5;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #666;
            --trimester-1: #f8bbd9;
            --trimester-2: #90caf9;
            --trimester-3: #a5d6a7;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --info-color: #17a2b8;
        }
        .page-header {
            background: linear-gradient(135deg, rgba(248, 187, 217, 0.4) 0%, rgba(233, 30, 99, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(233, 30, 99, 0.2);
            position: relative;
            overflow: hidden;  color: var(--text-color);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--text-color);
        }
        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
            font-weight: 600;
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .wheel-container {
            position: relative;
            width: 100%;
            max-width: 500px;
            margin: 0 auto;
        }
        .pregnancy-wheel {
            width: 100%;
            height: 500px;
            position: relative;
        }
        .wheel-circle {
            position: absolute;
            border-radius: 50%;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            border: 2px dashed rgba(233, 30, 99, 0.3);
        }
        .wheel-inner-circle {
            width: 80%;
            height: 80%;
            background: linear-gradient(135deg, var(--light-pink) 0%, var(--light-blue) 50%, var(--light-green) 100%);
        }
        .wheel-middle-circle {
            width: 90%;
            height: 90%;
        }
        .wheel-outer-circle {
            width: 100%;
            height: 100%;
        }
        .wheel-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            border-radius: 50%;
            width: 120px;
            height: 120px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            z-index: 10;
            border: 3px solid var(--primary-color);
        }
        .wheel-week {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .wheel-week-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .wheel-marker {
            position: absolute;
            top: 0;
            left: 50%;
            width: 4px;
            height: 40px;
            background-color: var(--primary-color);
            transform-origin: bottom center;
            transform: translateX(-50%);
            z-index: 5;
        }
        .wheel-week-label-marker {
            position: absolute;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-color);
            transform-origin: center;
            text-align: center;
        }
        .wheel-trimester {
            position: absolute;
            border-radius: 50%;
            opacity: 0.2;
        }
        .trimester-1 {
            background-color: var(--trimester-1);
        }
        .trimester-2 {
            background-color: var(--trimester-2);
        }
        .trimester-3 {
            background-color: var(--trimester-3);
        }
        .result-title i {
            margin-right: 0.5rem;
        }
        .summary-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .milestone-card {
            background: white;
            border-radius: 8px;
            padding: 1.25rem;
            border-left: 4px solid var(--primary-color);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
        }
        .milestone-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--light-pink);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            color: var(--primary-color);
            flex-shrink: 0;
        }
        .pregnancy-timeline {
            position: relative;
            margin: 2rem 0;
            padding-left: 2rem;
        }
        .timeline-track {
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background-color: var(--border-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
            padding-left: 2rem;
        }
        .timeline-dot {
            position: absolute;
            left: -1.5rem;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 2px var(--primary-color);
        }
        .timeline-content {
            background-color: white;
            border-radius: 6px;
            padding: 1rem;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .timeline-week {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.25rem;
        }
        .trimester-box {
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 1rem;
        }
        .trimester-1-box {
            background-color: rgba(248, 187, 217, 0.2);
            border-left: 4px solid var(--trimester-1);
        }
        .trimester-2-box {
            background-color: rgba(144, 202, 249, 0.2);
            border-left: 4px solid var(--trimester-2);
        }
        .trimester-3-box {
            background-color: rgba(165, 214, 167, 0.2);
            border-left: 4px solid var(--trimester-3);
        }
        @media (max-width: 768px) {
            .pregnancy-wheel {
                height: 400px;
            }
        }
        .nav-tabs .nav-tabs .milestone-badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        .badge-trimester-1 {
            background-color: var(--trimester-1);
            color: #880e4f;
        }
        .badge-trimester-2 {
            background-color: var(--trimester-2);
            color: #0d47a1;
        }
        .badge-trimester-3 {
            background-color: var(--trimester-3);
            color: #1b5e20;
        }
        .progress {
            height: 10px;
            border-radius: 5px;
            background-color: var(--light-gray);
            margin: 1rem 0;
        }
        .progress-bar {
            background-color: var(--primary-color);
            border-radius: 5px;
        }
        .countdown-card {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: white;
            border-radius: 8px;
            padding: 1.5rem;
            text-align: center;
            margin-bottom: 1.5rem;
        }
        .countdown-value {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .countdown-label {
            font-size: 1rem;
            opacity: 0.9;
        }
        .calendar-container {
            background-color: white;
            border-radius: 8px;
            padding: 1.5rem;
            border: 1px solid var(--border-color);
        }
        .calendar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }
        .calendar-weekdays {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            text-align: center;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        .calendar-days {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 2px;
        }
        .calendar-day {
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            cursor: pointer;
        }
        .calendar-day:hover {
            background-color: var(--light-pink);
        }
        .calendar-day.current {
            background-color: var(--primary-color);
            color: white;
        }
        .calendar-day.pregnancy {
            background-color: rgba(233, 30, 99, 0.1);
            color: var(--primary-color);
            font-weight: 600;
        }
        .calendar-day.today {
            border: 2px solid var(--primary-color);
        }
        .calendar-day.due-date {
            background-color: var(--accent-color);
            color: white;
            font-weight: 700;
        }
        .development-card {
            border-radius: 8px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            background-color: white;
            border: 1px solid var(--border-color);
        }
        .development-image {
            width: 100%;
            height: 200px;
            background-color: var(--light-gray);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            overflow: hidden;
        }
        .development-image i {
            font-size: 4rem;
            color: var(--primary-color);
            opacity: 0.3;
        }
        .size-comparison {
            font-style: italic;
            color: var(--primary-color);
            padding: 0.5rem;
            background-color: rgba(233, 30, 99, 0.1);
            border-radius: 4px;
            margin: 0.5rem 0;
        }
        @media print {
            .navbar, .footer, .action-btn, .btn, .ad-container, .related-tools, .tool-card, .page-header {
                background: none;
                padding: 0.5rem 0;
            }
            }
        @media (prefers-contrast: high) {
            :root {
                --primary-color: #b0003a;
                --accent-color: #87002f;
                --border-color: #000;
                --text-color: #000;
            }
            .summary-card, .milestone-card, .development-card {
                border: 2px solid var(--border-color);
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }
        *:focus {
            outline: 3px solid var(--primary-color);
            outline-offset: 2px;
        }
        .skip-to-main {
            position: absolute;
            top: -40px;
            left: 0;
            background: var(--primary-color);
            color: white;
            padding: 8px;
            z-index: 100;
            text-decoration: none;
        }
        .skip-to-main:focus {
            top: 0;
        }
        .medical-disclaimer {
            background-color: rgba(220, 53, 69, 0.1);
            border-left: 4px solid var(--danger-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }