/* ===================================
   PregnancyCalculator.css
   Professional Pregnancy Due Date Calculator
   =================================== */

:root{--preg-primary:#ec4899;--preg-primary-dark:#db2777;--preg-primary-light:#f472b6;--preg-secondary:#8b5cf6;--preg-gradient:linear-gradient(135deg,#ec4899 0%,#8b5cf6 100%);--preg-gradient-soft:linear-gradient(135deg,#fdf2f8 0%,#faf5ff 100%)}

/* Hero */
.preg-hero{padding:2.5rem 0 1.5rem;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1.25rem;background:var(--preg-gradient-soft);color:var(--preg-primary);border-radius:var(--radius-full);font-size:.875rem;font-weight:600;margin-bottom:1rem;border:1px solid rgba(236,72,153,.2)}
.hero-title{font-size:2.5rem;font-weight:800;color:var(--text-primary);margin-bottom:.75rem}
.hero-subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:600px;margin:0 auto}

/* Main */
.preg-section{padding:0 0 4rem}
.preg-wrapper{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:2rem;margin-bottom:3rem}
.preg-card{background:var(--bg-card);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);overflow:hidden}

/* Card Header */
.card-header{display:flex;align-items:center;gap:1rem;padding:1.5rem;background:var(--preg-gradient);color:#fff}
.header-icon{width:56px;height:56px;background:rgba(255,255,255,.2);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:1.75rem}
.header-text h2{font-size:1.25rem;font-weight:700;margin:0}
.header-text p{font-size:.875rem;opacity:.9;margin:.25rem 0 0}
.card-body{padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}

/* Method Tabs */
.method-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;background:var(--bg-body);padding:.375rem;border-radius:var(--radius-lg)}
.method-tab{display:flex;flex-direction:column;align-items:center;gap:.25rem;padding:.75rem .5rem;border:none;background:transparent;border-radius:var(--radius-md);font-size:.75rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:.2s}
.method-tab i{font-size:1.25rem}
.method-tab:hover{color:var(--preg-primary);background:rgba(236,72,153,.05)}
.method-tab.active{background:var(--preg-gradient);color:#fff;box-shadow:0 4px 12px rgba(236,72,153,.3)}
.method-description{display:flex;align-items:flex-start;gap:.75rem;padding:1rem;background:var(--preg-gradient-soft);border-radius:var(--radius-lg);font-size:.875rem;color:var(--text-secondary)}
.method-description i{color:var(--preg-primary);flex-shrink:0}

/* Form */
.input-fields{display:flex;flex-direction:column;gap:1.25rem}
.form-group{display:flex;flex-direction:column;gap:.5rem}
.form-label{font-size:.875rem;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:.5rem}
.form-label i{color:var(--preg-primary)}
.form-control{padding:.875rem 1rem;border:2px solid var(--border-color);border-radius:var(--radius-lg);font-size:1rem;background:var(--bg-body);transition:.2s}
.form-control:focus{outline:none;border-color:var(--preg-primary);box-shadow:0 0 0 4px rgba(236,72,153,.15)}
.form-hint{font-size:.75rem;color:var(--text-muted)}
.input-wrap{display:flex;align-items:center;border:2px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-body);transition:.2s}
.input-wrap:focus-within{border-color:var(--preg-primary);box-shadow:0 0 0 4px rgba(236,72,153,.15)}
.input-wrap .form-control{border:none;background:transparent;flex:1}
.input-wrap .form-control:focus{box-shadow:none}
.input-suffix{padding:0 1rem;color:var(--text-muted);font-size:.875rem;background:var(--bg-card);border-left:1px solid var(--border-color);min-height:48px;display:flex;align-items:center}
.dual-input{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.radio-group{display:flex;flex-direction:column;gap:.5rem}
.radio-group.horizontal{flex-direction:row;gap:.75rem}
.radio-option{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:var(--radius-lg);cursor:pointer;transition:.2s;flex:1}
.radio-option:hover{border-color:var(--preg-primary-light)}
.radio-option input{accent-color:var(--preg-primary)}
.radio-option:has(input:checked){border-color:var(--preg-primary);background:rgba(236,72,153,.05)}
.radio-label{font-size:.875rem;color:var(--text-secondary)}

/* Button */
.btn-calculate{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1rem 2rem;background:var(--preg-gradient);color:#fff;border:none;border-radius:var(--radius-lg);font-size:1rem;font-weight:600;cursor:pointer;transition:.3s}
.btn-calculate:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(236,72,153,.35)}
.disclaimer{display:flex;align-items:flex-start;gap:.75rem;padding:1rem;background:#fef3c7;border-radius:var(--radius-lg);font-size:.8125rem;color:#92400e}
.disclaimer i{color:#d97706;flex-shrink:0}

/* Result Placeholder */
.result-card{display:flex;flex-direction:column}
.result-placeholder{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 2rem;text-align:center}
.placeholder-animation{position:relative;margin-bottom:1.5rem}
.baby-icon{width:100px;height:100px;background:var(--preg-gradient-soft);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--preg-primary);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
.floating-hearts{position:absolute;top:0;left:50%;transform:translateX(-50%);width:120px;height:120px}
.floating-hearts i{position:absolute;color:var(--preg-primary-light);font-size:.75rem;opacity:0;animation:float-heart 3s ease-in-out infinite}
.floating-hearts i:nth-child(1){left:10%;animation-delay:0s}
.floating-hearts i:nth-child(2){left:50%;animation-delay:1s}
.floating-hearts i:nth-child(3){left:90%;animation-delay:2s}
@keyframes float-heart{0%{opacity:0;transform:translateY(60px) scale(.5)}50%{opacity:1}100%{opacity:0;transform:translateY(-20px) scale(1)}}
.result-placeholder h2{font-size:1.5rem;font-weight:700;margin-bottom:.5rem}
.result-placeholder p{color:var(--text-secondary);max-width:300px}

/* Result Content */
.result-content{padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}
.due-date-hero{display:flex;align-items:center;gap:1.25rem;padding:1.5rem;background:var(--preg-gradient);border-radius:var(--radius-xl);color:#fff}
.due-date-icon{width:64px;height:64px;background:rgba(255,255,255,.2);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:2rem;flex-shrink:0}
.due-label{display:block;font-size:.875rem;opacity:.9}
.due-date{display:block;font-size:1.5rem;font-weight:700}
.due-countdown{display:block;font-size:.875rem;opacity:.9;margin-top:.375rem}
.multiple-warning{display:flex;align-items:center;gap:.75rem;padding:1rem;background:#fef3c7;border-radius:var(--radius-lg);font-size:.875rem;color:#92400e}
.multiple-warning i{color:#d97706;font-size:1.25rem;flex-shrink:0}

/* Status Cards */
.status-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.status-card{padding:1rem;background:var(--bg-body);border-radius:var(--radius-lg);text-align:center;transition:.2s}
.status-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.status-icon{width:40px;height:40px;background:var(--preg-gradient-soft);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.25rem;color:var(--preg-primary);margin:0 auto .75rem}
.status-value{display:block;font-size:1.75rem;font-weight:800;color:var(--text-primary)}
.status-label{display:block;font-size:.75rem;color:var(--text-muted);margin-top:.25rem}
.status-extra{font-size:.75rem;color:var(--text-secondary);margin-top:.5rem}
.trimester-card.tri-1 .status-icon{background:#dbeafe;color:#2563eb}
.trimester-card.tri-2 .status-icon{background:#d1fae5;color:#059669}
.trimester-card.tri-3 .status-icon{background:#fef3c7;color:#d97706}

/* Progress */
.progress-section{padding:1.25rem;background:var(--bg-body);border-radius:var(--radius-lg)}
.progress-header{display:flex;justify-content:space-between;margin-bottom:1rem}
.progress-title{font-size:.9375rem;font-weight:600}
.progress-percent{font-size:1rem;font-weight:700;color:var(--preg-primary)}
.progress-track{position:relative;height:16px;background:linear-gradient(90deg,#93c5fd 0%,#93c5fd 32.5%,#86efac 32.5%,#86efac 67.5%,#fde68a 67.5%,#fde68a 100%);border-radius:8px;overflow:visible;margin-bottom:1.5rem}
.progress-fill{position:absolute;left:0;top:0;height:100%;background:rgba(0,0,0,.1);border-radius:8px;transition:.5s}
.progress-pointer{position:absolute;top:50%;transform:translate(-50%,-50%);width:24px;height:24px;background:#fff;border:3px solid var(--preg-primary);border-radius:50%;box-shadow:0 2px 8px rgba(0,0,0,.2);transition:.5s;z-index:2}
.pointer-label{position:absolute;bottom:100%;left:50%;transform:translateX(-50%);padding:.25rem .5rem;background:var(--preg-primary);color:#fff;font-size:.6875rem;font-weight:600;border-radius:4px;white-space:nowrap;margin-bottom:4px}
.pointer-label::after{content:'';position:absolute;top:100%;left:50%;transform:translateX(-50%);border:4px solid transparent;border-top-color:var(--preg-primary)}
.trimester-markers{display:none}
.progress-labels{display:flex;justify-content:space-between;font-size:.6875rem;color:var(--text-muted)}

/* Baby Development */
.baby-development{padding:1.25rem;background:var(--preg-gradient-soft);border-radius:var(--radius-lg);border:1px solid rgba(236,72,153,.1)}
.development-header h3{font-size:1rem;font-weight:600;display:flex;align-items:center;gap:.5rem;margin:0 0 1rem}
.development-header i{color:var(--preg-primary)}
.development-content{display:flex;gap:1.5rem;align-items:center;margin-bottom:1rem}
.baby-visual{text-align:center}
.baby-size-icon{font-size:4rem;line-height:1;margin-bottom:.5rem}
.size-label{font-size:.75rem;color:var(--text-muted)}
.size-name{font-size:.9375rem;font-weight:600;color:var(--preg-primary-dark)}
.baby-stats{flex:1;display:flex;flex-direction:column;gap:.75rem}
.stat-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:#fff;border-radius:var(--radius-md)}
.stat-item i{color:var(--preg-primary);font-size:1.125rem}
.stat-label{font-size:.75rem;color:var(--text-muted)}
.stat-value{margin-left:auto;font-size:.9375rem;font-weight:600}
.development-description{padding-top:1rem;border-top:1px solid rgba(236,72,153,.15)}
.development-description p{font-size:.875rem;color:var(--text-secondary);line-height:1.6;margin:0}

/* Key Dates */
.key-dates h3{font-size:1rem;font-weight:600;display:flex;align-items:center;gap:.5rem;margin:0 0 1rem}
.key-dates h3 i{color:var(--preg-primary)}
.dates-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem}
.date-card{display:flex;align-items:center;gap:.75rem;padding:.875rem;background:var(--bg-body);border-radius:var(--radius-md);transition:.2s}
.date-card:hover{background:var(--preg-gradient-soft)}
.date-icon{width:36px;height:36px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.date-icon.conception{background:#fce7f3;color:#db2777}
.date-icon.implantation{background:#ede9fe;color:#7c3aed}
.date-icon.heartbeat{background:#fee2e2;color:#dc2626}
.date-icon.movement{background:#dbeafe;color:#2563eb}
.date-icon.second-tri{background:#d1fae5;color:#059669}
.date-icon.third-tri{background:#fef3c7;color:#d97706}
.date-icon.viability{background:#dcfce7;color:#16a34a}
.date-icon.full-term{background:#f0fdf4;color:#15803d}
.date-label{display:block;font-size:.75rem;color:var(--text-muted)}
.date-value{font-size:.875rem;font-weight:600;color:var(--text-primary)}

/* Actions */
.result-actions{display:flex;gap:.75rem;padding-top:1rem;border-top:1px solid var(--border-color)}
.btn-action{flex:1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem;border:2px solid var(--border-color);background:var(--bg-body);border-radius:var(--radius-lg);font-size:.875rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:.2s}
.btn-action:hover{border-color:var(--preg-primary);color:var(--preg-primary);background:rgba(236,72,153,.05)}

/* Milestones */
.milestones-section,.weekly-section{background:var(--bg-card);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:2rem;margin-bottom:2rem}
.section-header{text-align:center;margin-bottom:2rem}
.section-header h2{font-size:1.5rem;font-weight:700;display:flex;align-items:center;justify-content:center;gap:.75rem;margin:0 0 .5rem}
.section-header h2 i{color:var(--preg-primary)}
.section-header p{color:var(--text-secondary);margin:0}
.milestones-filter{display:flex;justify-content:center;gap:.5rem;margin-bottom:2rem;flex-wrap:wrap}
.filter-btn{padding:.5rem 1.25rem;border:2px solid var(--border-color);background:var(--bg-body);border-radius:var(--radius-full);font-size:.875rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:.2s}
.filter-btn:hover{border-color:var(--preg-primary);color:var(--preg-primary)}
.filter-btn.active{background:var(--preg-gradient);color:#fff;border-color:transparent}

/* Timeline */
.timeline-container{display:flex;flex-direction:column;gap:0}
.timeline-item{display:flex;gap:1rem;padding:1rem 0;position:relative}
.timeline-item:not(:last-child) .timeline-line{content:'';position:absolute;left:15px;top:48px;bottom:-8px;width:2px;background:var(--border-color)}
.timeline-item.past .timeline-line{background:var(--preg-primary)}
.timeline-marker{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--bg-body);border:2px solid var(--border-color);color:var(--text-muted);font-size:.875rem;flex-shrink:0;z-index:1}
.timeline-item.past .timeline-marker{background:var(--preg-primary);border-color:var(--preg-primary);color:#fff}
.timeline-item.current .timeline-marker{background:#fff;border-color:var(--preg-primary);color:var(--preg-primary);box-shadow:0 0 0 4px rgba(236,72,153,.2)}
.timeline-item.upcoming .timeline-marker{border-color:var(--preg-primary-light);color:var(--preg-primary-light)}
.timeline-content{flex:1;padding-bottom:1rem;border-bottom:1px solid var(--border-light)}
.timeline-item:last-child .timeline-content{border-bottom:none}
.timeline-header{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem;flex-wrap:wrap}
.timeline-week{font-size:.75rem;font-weight:700;color:var(--preg-primary)}
.timeline-badge{font-size:.625rem;padding:.25rem .5rem;border-radius:var(--radius-full);font-weight:600;text-transform:uppercase}
.timeline-badge.appointments{background:#dbeafe;color:#2563eb}
.timeline-badge.development{background:#d1fae5;color:#059669}
.timeline-badge.tests{background:#fef3c7;color:#d97706}
.timeline-title{font-size:1rem;font-weight:600;margin:0 0 .25rem}
.timeline-desc{font-size:.875rem;color:var(--text-secondary);margin:0 0 .5rem}
.timeline-date{font-size:.75rem;color:var(--text-muted)}
.timeline-item.past .timeline-title{color:var(--text-muted)}

/* Weekly */
.weekly-navigator{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:2rem}
.nav-btn{width:44px;height:44px;border:2px solid var(--border-color);background:var(--bg-body);border-radius:var(--radius-lg);font-size:1.25rem;color:var(--text-secondary);cursor:pointer;transition:.2s;display:flex;align-items:center;justify-content:center}
.nav-btn:hover{border-color:var(--preg-primary);color:var(--preg-primary)}
.week-selector .form-select{padding:.75rem 2.5rem .75rem 1rem;border:2px solid var(--border-color);border-radius:var(--radius-lg);font-size:1rem;font-weight:600;min-width:140px}
.weekly-card{background:var(--bg-body);border-radius:var(--radius-lg);overflow:hidden}
.weekly-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;background:var(--preg-gradient-soft);flex-wrap:wrap;gap:1rem}
.weekly-title h3{font-size:1.5rem;font-weight:700;margin:0}
.weekly-trimester{display:inline-block;padding:.375rem .75rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;margin-top:.5rem}
.weekly-trimester.tri-1{background:#dbeafe;color:#2563eb}
.weekly-trimester.tri-2{background:#d1fae5;color:#059669}
.weekly-trimester.tri-3{background:#fef3c7;color:#d97706}
.weekly-size{text-align:center}
.weekly-size .size-icon{font-size:3rem}
.weekly-size .size-text{display:block;font-size:.875rem;color:var(--text-secondary)}
.weekly-stats{display:flex;justify-content:center;gap:2rem;padding:1.5rem;border-bottom:1px solid var(--border-color)}
.weekly-stats .stat{text-align:center}
.weekly-stats .stat i{font-size:1.5rem;color:var(--preg-primary);margin-bottom:.5rem;display:block}
.weekly-stats .stat-label{display:block;font-size:.75rem;color:var(--text-muted)}
.weekly-stats .stat-value{font-size:1rem;font-weight:600}
.weekly-description,.weekly-milestones{padding:1.5rem}
.weekly-description h4,.weekly-milestones h4{font-size:1rem;font-weight:600;display:flex;align-items:center;gap:.5rem;margin:0 0 1rem}
.weekly-description h4 i,.weekly-milestones h4 i{color:var(--preg-primary)}
.weekly-description p{color:var(--text-secondary);line-height:1.7;margin:0}
.weekly-milestones{border-top:1px solid var(--border-color)}
.weekly-milestones ul{list-style:none;padding:0;margin:0}
.weekly-milestones li{padding:.5rem 0;color:var(--text-secondary);line-height:1.5}

/* Info Section */
.info-section{margin-bottom:3rem}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.info-card{background:var(--bg-card);border-radius:var(--radius-xl);padding:2rem;text-align:center;box-shadow:var(--shadow-md);transition:.3s}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.info-icon{width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.75rem;margin:0 auto 1.25rem}
.info-icon.t1{background:#dbeafe;color:#2563eb}
.info-icon.t2{background:#d1fae5;color:#059669}
.info-icon.t3{background:#fef3c7;color:#d97706}
.info-card h3{font-size:1.125rem;font-weight:700;margin:0 0 .5rem}
.info-weeks{font-size:.875rem;color:var(--preg-primary);font-weight:600;margin:0 0 1rem}
.info-list{list-style:none;padding:0;margin:0;text-align:left}
.info-list li{padding:.375rem 0;font-size:.875rem;color:var(--text-secondary);display:flex;align-items:flex-start;gap:.5rem}
.info-list li::before{content:'✓';color:var(--preg-primary);font-weight:700}

/* FAQ */
.faq-section{background:var(--bg-card);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--shadow-lg)}
.faq-section .section-header{margin-bottom:1.5rem}
.accordion-item{border:1px solid var(--border-color);border-radius:var(--radius-lg)!important;margin-bottom:1rem;overflow:hidden}
.accordion-button{padding:1.25rem;font-size:1rem;font-weight:600;background:var(--bg-card)}
.accordion-button:not(.collapsed){color:var(--preg-primary);background:var(--preg-gradient-soft)}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:0 1.25rem 1.25rem;color:var(--text-secondary);line-height:1.7}

/* Dark Mode */
[data-theme="dark"] .preg-card,[data-theme="dark"] .milestones-section,[data-theme="dark"] .weekly-section,[data-theme="dark"] .info-card,[data-theme="dark"] .faq-section{background:var(--bg-card)}
[data-theme="dark"] .method-tabs,[data-theme="dark"] .input-wrap,[data-theme="dark"] .radio-option,[data-theme="dark"] .status-card,[data-theme="dark"] .progress-section,[data-theme="dark"] .date-card,[data-theme="dark"] .btn-action,[data-theme="dark"] .filter-btn,[data-theme="dark"] .nav-btn,[data-theme="dark"] .weekly-card,[data-theme="dark"] .timeline-marker{background:#1e293b;border-color:var(--border-color)}
[data-theme="dark"] .input-suffix{background:#334155;border-color:var(--border-color)}
[data-theme="dark"] .method-description,[data-theme="dark"] .baby-development,[data-theme="dark"] .weekly-header{background:linear-gradient(135deg,#4a044e 0%,#3b0764 100%)}
[data-theme="dark"] .stat-item{background:#334155}
[data-theme="dark"] .disclaimer,[data-theme="dark"] .multiple-warning{background:#422006;color:#fef3c7}
[data-theme="dark"] .disclaimer i,[data-theme="dark"] .multiple-warning i{color:#fbbf24}
[data-theme="dark"] .form-control{background:#1e293b;border-color:var(--border-color);color:var(--text-primary)}
[data-theme="dark"] .progress-pointer{background:#1e293b}
[data-theme="dark"] .accordion-item{background:var(--bg-card);border-color:var(--border-color)}
[data-theme="dark"] .accordion-button{background:var(--bg-card);color:var(--text-primary)}
[data-theme="dark"] .accordion-button:not(.collapsed){background:rgba(236,72,153,.1)}
[data-theme="dark"] .timeline-content{border-color:var(--border-color)}

/* Responsive */
@media(max-width:991.98px){
    .preg-wrapper{grid-template-columns:1fr}
    .info-grid{grid-template-columns:1fr}
    .hero-title{font-size:2rem}
}
@media(max-width:767.98px){
    .method-tabs{grid-template-columns:repeat(2,1fr)}
    .status-cards{grid-template-columns:1fr}
    .dates-grid{grid-template-columns:1fr}
    .due-date-hero{flex-direction:column;text-align:center}
    .weekly-stats{flex-wrap:wrap;gap:1.5rem}
}
@media(max-width:575.98px){
    .hero-title{font-size:1.75rem}
    .due-date{font-size:1.25rem}
    .development-content{flex-direction:column}
    .result-actions{flex-direction:column}
}

/* Print */
@media print{
    .preg-hero,.method-tabs,.method-description,.btn-calculate,.disclaimer,.result-actions,.milestones-filter,.weekly-navigator,.faq-section{display:none!important}
    .preg-wrapper{grid-template-columns:1fr}
    .preg-card,.milestones-section,.weekly-section{box-shadow:none;border:1px solid #ddd}
}