/* ============================================================
   Pregnancy Calculator — Stylesheet
   Teal / White / Black palette — Fully Responsive
   ============================================================ */

/* ---- Variables ---- */
.preg-calc-wrap {
    --pc-teal:        #0d9488;
    --pc-teal-dark:   #0f766e;
    --pc-teal-light:  #ccfbf1;
    --pc-teal-xlight: #f0fdfa;
    --pc-white:       #ffffff;
    --pc-black:       #0f1a1a;
    --pc-gray:        #4b5563;
    --pc-gray-light:  #e5e7eb;
    --pc-radius:      16px;
    --pc-radius-sm:   8px;
    --pc-shadow:      0 4px 32px rgba(13,148,136,0.12);
    --pc-font:        'Georgia', 'Times New Roman', serif;
    --pc-font-ui:     system-ui, -apple-system, 'Segoe UI', sans-serif;
    font-family: var(--pc-font-ui);
    color: var(--pc-black);
}

/* ---- Wrapper ---- */
.preg-calc-wrap {
    max-width: 680px;
    margin: 2rem auto;
    background: var(--pc-white);
    border-radius: var(--pc-radius);
    box-shadow: var(--pc-shadow);
    overflow: hidden;
    border: 1px solid var(--pc-teal-light);
}

/* ---- Header ---- */
.preg-calc-header {
    background: linear-gradient(135deg, var(--pc-teal) 0%, var(--pc-teal-dark) 100%);
    padding: 2rem 2rem 1.6rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    color: var(--pc-white);
}

.preg-calc-header-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preg-calc-header-icon svg {
    width: 36px;
    height: 36px;
}

.preg-calc-header-text h2 {
    margin: 0 0 0.25rem;
    font-size: clamp(1.25rem, 3vw, 1.6rem);
    font-family: var(--pc-font);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--pc-white);
    line-height: 1.2;
    /* Override theme h2 styles */
    border: none;
    padding: 0;
}

.preg-calc-header-text p {
    margin: 0;
    opacity: 0.85;
    font-size: 0.9rem;
    color: var(--pc-white);
}

/* ---- Tabs ---- */
.preg-calc-tabs {
    display: flex;
    background: var(--pc-teal-xlight);
    border-bottom: 2px solid var(--pc-teal-light);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.preg-calc-tabs::-webkit-scrollbar { display: none; }

.preg-calc-tab {
    flex: 1 1 auto;
    min-width: 110px;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: var(--pc-font-ui);
    color: var(--pc-gray);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
    text-align: center;
    letter-spacing: 0.01em;
    margin-bottom: -2px;
    line-height: 1.2;
}

.preg-calc-tab:hover {
    color: var(--pc-teal-dark);
    background: rgba(13,148,136,0.06);
}

.preg-calc-tab.active {
    color: var(--pc-teal-dark);
    border-bottom-color: var(--pc-teal);
    background: var(--pc-white);
}

.preg-calc-tab:focus-visible {
    outline: 2px solid var(--pc-teal);
    outline-offset: -2px;
}

/* ---- Body / Panels ---- */
.preg-calc-body {
    padding: 1.75rem 2rem;
}

.preg-calc-panel { display: none; }
.preg-calc-panel.active { display: block; }

.preg-calc-hint {
    font-size: 0.88rem;
    color: var(--pc-gray);
    margin: 0 0 1.25rem;
    line-height: 1.5;
}

/* ---- Form Fields ---- */
.preg-calc-field {
    margin-bottom: 1.1rem;
}

.preg-calc-field label {
    display: block;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--pc-black);
    margin-bottom: 0.4rem;
    letter-spacing: 0.01em;
}

.preg-calc-input {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border: 1.5px solid var(--pc-gray-light);
    border-radius: var(--pc-radius-sm);
    font-size: 0.95rem;
    font-family: var(--pc-font-ui);
    color: var(--pc-black);
    background: var(--pc-white);
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
}

.preg-calc-input:focus {
    outline: none;
    border-color: var(--pc-teal);
    box-shadow: 0 0 0 3px rgba(13,148,136,0.15);
}

select.preg-calc-input {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230d9488' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    padding-right: 2.4rem;
    cursor: pointer;
}

/* ---- Calculate Button ---- */
.preg-calc-btn {
    display: block;
    width: 100%;
    margin-top: 1.4rem;
    padding: 0.85rem 1.5rem;
    background: linear-gradient(135deg, var(--pc-teal) 0%, var(--pc-teal-dark) 100%);
    color: var(--pc-white);
    border: none;
    border-radius: var(--pc-radius-sm);
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--pc-font-ui);
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
    box-shadow: 0 4px 14px rgba(13,148,136,0.35);
}

.preg-calc-btn:hover {
    opacity: 0.92;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(13,148,136,0.4);
}

.preg-calc-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(13,148,136,0.3);
}

.preg-calc-btn:focus-visible {
    outline: 2px solid var(--pc-teal-dark);
    outline-offset: 3px;
}

/* ---- Error ---- */
.preg-calc-error {
    margin: 0 2rem 1rem;
    padding: 0.75rem 1rem;
    background: #fef2f2;
    border: 1.5px solid #fca5a5;
    border-radius: var(--pc-radius-sm);
    color: #b91c1c;
    font-size: 0.88rem;
    font-weight: 500;
}

/* ---- Results ---- */
.preg-calc-results {
    padding: 0 2rem 2rem;
    animation: preg-fade-up 0.4s ease;
}

@keyframes preg-fade-up {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Due Date Hero */
.preg-calc-due-hero {
    background: linear-gradient(135deg, var(--pc-teal) 0%, var(--pc-teal-dark) 100%);
    border-radius: var(--pc-radius);
    padding: 1.5rem 2rem;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--pc-white);
}

.preg-calc-due-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.85;
    margin-bottom: 0.4rem;
}

.preg-calc-due-date {
    display: block;
    font-family: var(--pc-font);
    font-size: clamp(1.5rem, 4vw, 2.1rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Stats Grid */
.preg-calc-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.preg-calc-stat {
    background: var(--pc-teal-xlight);
    border: 1px solid var(--pc-teal-light);
    border-radius: var(--pc-radius-sm);
    padding: 1rem 0.75rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.preg-calc-stat-icon {
    font-size: 1.3rem;
    line-height: 1;
}

.preg-calc-stat-value {
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    font-weight: 700;
    color: var(--pc-teal-dark);
    font-family: var(--pc-font);
    line-height: 1;
}

.preg-calc-stat-label {
    font-size: 0.7rem;
    color: var(--pc-gray);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1.2;
}

/* Progress Bar */
.preg-calc-progress-wrap {
    margin-bottom: 1.75rem;
}

.preg-calc-progress-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--pc-gray);
    margin-bottom: 0.5rem;
}

.preg-calc-progress-bar {
    height: 12px;
    background: var(--pc-gray-light);
    border-radius: 99px;
    overflow: hidden;
}

.preg-calc-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--pc-teal) 0%, var(--pc-teal-dark) 100%);
    border-radius: 99px;
    width: 0%;
    transition: width 0.8s cubic-bezier(0.4,0,0.2,1);
}

.preg-calc-trimester-labels {
    display: flex;
    justify-content: space-around;
    font-size: 0.72rem;
    color: var(--pc-gray);
    margin-top: 0.4rem;
    font-weight: 600;
}

/* Key Dates */
.preg-calc-dates-section h3,
.preg-calc-size-section h3 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--pc-black);
    margin: 0 0 0.85rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-family: var(--pc-font-ui);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.preg-calc-dates-section h3::before { content: "📋"; }
.preg-calc-size-section h3::before  { content: "🍼"; }

.preg-calc-dates-section {
    margin-bottom: 1.5rem;
}

.preg-calc-dates-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
}

.preg-calc-date-item {
    background: var(--pc-white);
    border: 1.5px solid var(--pc-teal-light);
    border-radius: var(--pc-radius-sm);
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.preg-calc-date-item-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--pc-teal-dark);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.preg-calc-date-item-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--pc-black);
}

/* Baby Size */
.preg-calc-size-section {
    margin-bottom: 1.5rem;
}

.preg-calc-size-card {
    background: var(--pc-teal-xlight);
    border: 1.5px solid var(--pc-teal-light);
    border-radius: var(--pc-radius);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.preg-calc-size-emoji {
    font-size: 3rem;
    line-height: 1;
    flex-shrink: 0;
}

.preg-calc-size-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.preg-calc-size-fruit {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--pc-teal-dark);
}

.preg-calc-size-measure {
    font-size: 0.85rem;
    color: var(--pc-gray);
}

/* Reset Button */
.preg-calc-reset {
    display: block;
    width: 100%;
    padding: 0.7rem;
    background: none;
    border: 1.5px solid var(--pc-teal-light);
    border-radius: var(--pc-radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--pc-font-ui);
    color: var(--pc-teal-dark);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    margin-top: 0.5rem;
}

.preg-calc-reset:hover {
    background: var(--pc-teal-xlight);
    border-color: var(--pc-teal);
}

.preg-calc-reset:focus-visible {
    outline: 2px solid var(--pc-teal);
    outline-offset: 2px;
}

/* Disclaimer */
.preg-calc-disclaimer {
    margin: 0;
    padding: 1rem 2rem 1.25rem;
    font-size: 0.75rem;
    color: var(--pc-gray);
    text-align: center;
    line-height: 1.5;
    border-top: 1px solid var(--pc-gray-light);
}

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

@media (max-width: 600px) {
    .preg-calc-wrap {
        margin: 1rem;
        border-radius: 12px;
    }

    .preg-calc-header {
        padding: 1.4rem 1.25rem 1.2rem;
        gap: 1rem;
    }

    .preg-calc-header-icon {
        width: 44px;
        height: 44px;
    }

    .preg-calc-header-icon svg {
        width: 28px;
        height: 28px;
    }

    .preg-calc-body {
        padding: 1.25rem 1.25rem;
    }

    .preg-calc-results {
        padding: 0 1.25rem 1.5rem;
    }

    .preg-calc-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .preg-calc-dates-grid {
        grid-template-columns: 1fr;
    }

    .preg-calc-due-hero {
        padding: 1.25rem 1.25rem;
    }

    .preg-calc-disclaimer {
        padding: 1rem 1.25rem 1.25rem;
    }
}

@media (max-width: 360px) {
    .preg-calc-stats {
        grid-template-columns: 1fr 1fr;
    }
}

/* ---- Dark mode support (opt-in via WP theme) ---- */
@media (prefers-color-scheme: dark) {
    .preg-calc-wrap.dark-mode {
        --pc-white:      #1a2424;
        --pc-black:      #f0fdfa;
        --pc-gray:       #9ca3af;
        --pc-gray-light: #2d3c3c;
        --pc-teal-xlight:#0a1f1f;
        --pc-teal-light: #134e4a;
        background: var(--pc-white);
        border-color: var(--pc-teal-light);
    }
}