/* ==========================================================================
   Veterinary Drug Dosage Calculator — Design System
   Same direction as AI Vet Drug Info / AI Vet Treatment Planner: quiet
   neutral surface, one deliberate accent, Apple-style segmented tabs,
   Notion-calm form fields, and a soft blurred result card instead of a
   heavy dark overlay + blue popup.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

#vet-calculator {
    --vc-bg: #ffffff;
    --vc-bg-subtle: #fafaf8;
    --vc-bg-card: #f6f6f4;
    --vc-border: #e6e4df;
    --vc-border-strong: #d7d5cf;

    --vc-text: #1c1c1a;
    --vc-text-secondary: #6f6d68;
    --vc-text-tertiary: #9c9a94;

    --vc-accent: #16342a;
    --vc-accent-hover: #204a3b;
    --vc-accent-active: #0f261e;
    --vc-accent-wash: rgba(22, 52, 42, 0.07);

    --vc-radius-sm: 8px;
    --vc-radius-md: 12px;
    --vc-radius-lg: 18px;

    --vc-shadow-sm: 0 1px 2px rgba(20, 20, 18, 0.04);
    --vc-shadow-md: 0 2px 8px rgba(20, 20, 18, 0.05), 0 12px 32px rgba(20, 20, 18, 0.04);
    --vc-shadow-lg: 0 8px 24px rgba(20, 20, 18, 0.08), 0 24px 64px rgba(20, 20, 18, 0.10);

    --vc-font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;

    font-family: var(--vc-font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    max-width: 480px;
    margin: 0 auto;
    padding: 40px 24px;
    box-sizing: border-box;
    background: var(--vc-bg);
}

#vet-calculator * {
    box-sizing: border-box;
}

@media (prefers-reduced-motion: reduce) {
    #vet-calculator * {
        transition-duration: 0.001ms !important;
    }
}

/* --------------------------------------------------------------------
   Segmented tabs — Apple-style pill switcher, matching the other plugins
   -------------------------------------------------------------------- */

#vet-calculator .tabs {
    list-style: none;
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    margin: 0 0 28px;
    background: var(--vc-bg-card);
    border: 1px solid var(--vc-border);
    border-radius: 12px;
    width: 100%;
}

#vet-calculator .tabs .tab {
    flex: 1;
    text-align: center;
    padding: 9px 14px;
    cursor: pointer;
    background: transparent;
    border-radius: 9px;
    transition: background 0.15s ease, color 0.15s ease;
    font-weight: 500;
    font-size: 14px;
    color: var(--vc-text-secondary);
}

#vet-calculator .tabs .tab:hover {
    color: var(--vc-text);
}

#vet-calculator .tabs .tab.active {
    background: #ffffff;
    color: var(--vc-text);
    box-shadow: var(--vc-shadow-sm);
}

/* --------------------------------------------------------------------
   Tab panes / form
   -------------------------------------------------------------------- */

#vet-calculator .tab-content .tab-pane {
    display: none;
}

#vet-calculator .tab-content .tab-pane.active {
    display: block;
}

#vet-calculator form label {
    display: block;
    margin: 16px 0 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--vc-text);
    letter-spacing: 0.01em;
}

#vet-calculator form label:first-child {
    margin-top: 0;
}

#vet-calculator form input,
#vet-calculator form select {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 4px;
    border: 1px solid var(--vc-border-strong);
    border-radius: var(--vc-radius-md);
    font-size: 15px;
    font-family: var(--vc-font);
    background: var(--vc-bg);
    color: var(--vc-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    box-sizing: border-box;
    appearance: none;
    -webkit-appearance: none;
}

#vet-calculator form select {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236f6d68' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 36px;
}

#vet-calculator form input:hover,
#vet-calculator form select:hover {
    border-color: var(--vc-text-tertiary);
}

#vet-calculator form input:focus,
#vet-calculator form select:focus {
    outline: none;
    border-color: var(--vc-accent);
    box-shadow: 0 0 0 4px var(--vc-accent-wash);
}

#vet-calculator form input::placeholder {
    color: var(--vc-text-tertiary);
}

#vet-calculator .admin-fields {
    padding-top: 2px;
}

#vet-calculator form button {
    width: 100%;
    margin-top: 24px;
    padding: 13px;
    background: var(--vc-accent);
    color: #ffffff;
    border: none;
    border-radius: var(--vc-radius-md);
    font-size: 15px;
    font-weight: 600;
    font-family: var(--vc-font);
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.08s ease;
}

#vet-calculator form button:hover {
    background: var(--vc-accent-hover);
}

#vet-calculator form button:active {
    background: var(--vc-accent-active);
    transform: scale(0.98);
}

#vet-calculator form button:focus-visible,
#vet-calculator form input:focus-visible,
#vet-calculator form select:focus-visible {
    outline: 2px solid var(--vc-accent);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------
   Result popup — soft blurred overlay, quiet card instead of heavy
   dark scrim + blue accents
   -------------------------------------------------------------------- */

#result-popup {
    position: fixed !important;
    inset: 0;
    background: rgba(28, 28, 26, 0.28);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    padding: 20px;
    margin: 0;
}

#result-popup.active {
    display: flex;
}

#result-popup .popup-content {
    background: #ffffff;
    padding: 28px 28px 24px;
    border-radius: var(--vc-radius-lg);
    max-width: 380px;
    width: 100%;
    position: relative;
    box-shadow: var(--vc-shadow-lg);
    text-align: left;
}

#result-popup .popup-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    line-height: 1;
    color: var(--vc-text-secondary);
    background: var(--vc-bg-card);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

#result-popup .popup-close:hover {
    background: var(--vc-border);
    color: var(--vc-text);
}

#result-popup #popup-result h3 {
    margin: 0 0 16px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--vc-text-secondary);
}

#result-popup #popup-result p {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 16px;
    margin: 0;
    padding: 12px 0;
    border-top: 1px solid var(--vc-border);
}

#result-popup #popup-result p:first-of-type {
    border-top: none;
    padding-top: 0;
}

#result-popup #popup-result .vc-label {
    font-size: 14px;
    color: var(--vc-text-secondary);
}

#result-popup #popup-result .vc-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--vc-text);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

#result-popup #popup-result .vc-note {
    display: block;
    padding: 10px 12px;
    margin-top: 4px;
    font-size: 13.5px;
    color: #b3261e;
    background: #fdf1ef;
    border: 1px solid #f3c9c3;
    border-radius: var(--vc-radius-sm);
    border-top: 1px solid #f3c9c3;
}

/* --------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------- */

@media (max-width: 480px) {
    #vet-calculator {
        padding: 28px 18px;
    }

    #vet-calculator .tabs .tab {
        font-size: 13px;
        padding: 8px 10px;
    }

    #result-popup .popup-content {
        padding: 24px 20px 20px;
    }
}