/* =============================================
   Калькулятор постера — стили
   ============================================= */

.poster-calc-wrap {
    max-width: 420px;
    margin: 0 auto;
    padding: 32px 36px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.poster-calc-title {
    margin: 0 0 24px;
    font-size: 20px;
    font-weight: 700;
    color: #111827;
    text-align: center;
}

.poster-calc-row {
    margin-bottom: 16px;
}

.poster-calc-row label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #374151;
}

.poster-calc-row input[type="number"] {
    width: 100%;
    padding: 10px 14px;
    font-size: 16px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.2s;
    color: #111827;
}

.poster-calc-row input[type="number"]:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* убираем стрелки у числового поля (опционально) */
.poster-calc-row input[type="number"]::-webkit-inner-spin-button,
.poster-calc-row input[type="number"]::-webkit-outer-spin-button {
    opacity: 1;
}

#poster-calc-btn {
    display: block;
    width: 100%;
    margin-top: 8px;
    padding: 12px;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    background: #6366f1;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

#poster-calc-btn:hover {
    background: #4f46e5;
}

#poster-calc-btn:active {
    transform: scale(0.98);
}

#poster-calc-btn:disabled {
    background: #a5b4fc;
    cursor: not-allowed;
}

.poster-calc-result {
    margin-top: 20px;
    padding: 16px 20px;
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 8px;
    font-size: 15px;
    color: #166534;
    line-height: 1.6;
}

.poster-calc-result strong {
    font-size: 22px;
    color: #15803d;
}

.poster-calc-error {
    margin-top: 20px;
    padding: 14px 18px;
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-radius: 8px;
    font-size: 14px;
    color: #991b1b;
}