/* ═══════════════════════════════════════════════════════════════════════════
   PAWSPHERE DEWORMING CALCULATOR — Stylesheet
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
    --pw-primary:       #1a9e8f;
    --pw-primary-hover: #158a78;
    --pw-primary-light: #e6f7f5;
    --pw-dark:          #1c2733;
    --pw-label:         #2c3e50;
    --pw-placeholder:   #a8b8c4;
    --pw-border:        #dde6ec;
    --pw-bg:            #f0f4f7;
    --pw-card-bg:       #ffffff;
    --pw-error:         #e74c3c;
    --pw-error-bg:      #fdf2f2;
    --pw-success:       #27ae60;
    --pw-success-bg:    #eafaf1;
    --pw-radius:        12px;
    --pw-radius-sm:     8px;
    --pw-shadow:        0 4px 24px rgba(0,0,0,0.07);
    --pw-font:          'Segoe UI', 'Helvetica Neue', sans-serif;
}

/* ─── Outer Wrapper ─────────────────────────────────────────────────────── */
#pawsphere-calculator-root {
    font-family: var(--pw-font);
    max-width: 520px;
    margin: 40px auto;
    padding: 0 16px;
    color: var(--pw-label);
    -webkit-font-smoothing: antialiased;
}

/* ─── Card Shell ────────────────────────────────────────────────────────── */
.pw-card {
    background: var(--pw-card-bg);
    border: 2px solid var(--pw-primary-light);
    border-radius: var(--pw-radius);
    box-shadow: var(--pw-shadow);
    padding: 36px 32px 32px;
    position: relative;
    overflow: hidden;
}

/* Top accent stripe */
.pw-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--pw-primary), #4ecdc4, var(--pw-primary));
}

/* ─── Header ────────────────────────────────────────────────────────────── */
.pw-header {
    text-align: center;
    margin-bottom: 30px;
}
.pw-header h1 {
    font-size: 1.72rem;
    font-weight: 700;
    color: var(--pw-dark);
    margin: 0 0 6px;
    line-height: 1.25;
    letter-spacing: -0.3px;
}
.pw-header p {
    font-size: 0.88rem;
    color: var(--pw-placeholder);
    margin: 0;
    font-weight: 500;
}

/* ─── Login Banner ──────────────────────────────────────────────────────── */
.pw-login-banner {
    background: var(--pw-primary-light);
    border: 1px solid rgba(26,158,143,0.25);
    border-radius: var(--pw-radius-sm);
    padding: 10px 14px;
    font-size: 0.82rem;
    color: var(--pw-primary-hover);
    margin-bottom: 22px;
    text-align: center;
    font-weight: 500;
}
.pw-login-banner.pw-hidden { display: none; }

/* ─── Section Divider ───────────────────────────────────────────────────── */
.pw-divider {
    border: none;
    border-top: 1px solid var(--pw-border);
    margin: 22px 0;
}

/* ─── Form Group ────────────────────────────────────────────────────────── */
.pw-group {
    margin-bottom: 18px;
}
.pw-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--pw-label);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}
.pw-group .pw-required-star {
    color: var(--pw-error);
    margin-left: 2px;
}

/* ─── Inputs & Selects ──────────────────────────────────────────────────── */
.pw-input,
.pw-select {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    border: 1.5px solid var(--pw-border);
    border-radius: var(--pw-radius-sm);
    background: var(--pw-bg);
    font-size: 0.94rem;
    color: var(--pw-dark);
    font-family: var(--pw-font);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}
.pw-input::placeholder {
    color: var(--pw-placeholder);
}
.pw-input:focus,
.pw-select:focus {
    border-color: var(--pw-primary);
    box-shadow: 0 0 0 3px rgba(26,158,143,0.15);
    background: #fff;
}
.pw-input.pw-error,
.pw-select.pw-error {
    border-color: var(--pw-error);
    background: var(--pw-error-bg);
}

/* Select arrow */
.pw-select-wrap {
    position: relative;
}
.pw-select-wrap::after {
    content: '▾';
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--pw-placeholder);
    pointer-events: none;
    font-size: 0.85rem;
}

/* Disabled select */
.pw-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ─── Radio Group ───────────────────────────────────────────────────────── */
.pw-radio-group {
    display: flex;
    gap: 24px;
    margin-top: 4px;
}
.pw-radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--pw-label);
    cursor: pointer;
    font-weight: 500;
}
.pw-radio-label input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--pw-border);
    border-radius: 50%;
    background: var(--pw-bg);
    transition: all 0.2s;
    flex-shrink: 0;
}
.pw-radio-label input[type="radio"]:checked {
    border-color: var(--pw-primary);
    background: var(--pw-primary);
    box-shadow: inset 0 0 0 3px #fff;
}

/* ─── Submit Button ─────────────────────────────────────────────────────── */
.pw-btn-submit {
    width: 100%;
    padding: 14px;
    background: var(--pw-primary);
    color: #fff;
    border: none;
    border-radius: var(--pw-radius-sm);
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--pw-font);
    letter-spacing: 0.5px;
    cursor: pointer;
    margin-top: 8px;
    transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
}
.pw-btn-submit:hover {
    background: var(--pw-primary-hover);
    box-shadow: 0 4px 14px rgba(26,158,143,0.35);
}
.pw-btn-submit:active {
    transform: scale(0.98);
}
.pw-btn-submit:disabled {
    background: var(--pw-placeholder);
    cursor: not-allowed;
    box-shadow: none;
}

/* ─── Result Box ────────────────────────────────────────────────────────── */
.pw-result {
    display: none;
    margin-top: 24px;
    border-radius: var(--pw-radius-sm);
    padding: 20px 22px;
    border: 1.5px solid;
    animation: pw-fadeIn 0.35s ease;
}
.pw-result.pw-show { display: block; }
.pw-result.pw-success-box {
    background: var(--pw-success-bg);
    border-color: rgba(39,174,96,0.3);
}
.pw-result.pw-error-box {
    background: var(--pw-error-bg);
    border-color: rgba(231,76,60,0.3);
}
.pw-result-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.pw-result.pw-success-box .pw-result-title { color: var(--pw-success); }
.pw-result.pw-error-box   .pw-result-title { color: var(--pw-error); }

.pw-result-body {
    font-size: 0.9rem;
    color: var(--pw-dark);
    line-height: 1.7;
}
.pw-result-body .pw-dose-highlight {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--pw-primary);
}
.pw-result-body .pw-dose-note {
    font-size: 0.78rem;
    color: var(--pw-placeholder);
    margin-top: 8px;
    font-style: italic;
}

/* ─── Error hint under field ────────────────────────────────────────────── */
.pw-field-error {
    font-size: 0.75rem;
    color: var(--pw-error);
    margin-top: 4px;
    min-height: 16px;
    font-weight: 500;
}

/* ─── Loading spinner on button ─────────────────────────────────────────── */
.pw-btn-submit .pw-spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255,255,255,0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: pw-spin 0.6s linear infinite;
    margin: 0 auto;
}
.pw-btn-submit.pw-loading .pw-btn-text { display: none; }
.pw-btn-submit.pw-loading .pw-spinner  { display: block; }

/* ─── Keyframes ──────────────────────────────────────────────────────────── */
@keyframes pw-fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0);   }
}
@keyframes pw-spin {
    to { transform: rotate(360deg); }
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 540px) {
    .pw-card { padding: 28px 20px 24px; }
    .pw-header h1 { font-size: 1.45rem; }
}