/* Variables de color */
:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #cbd5e1;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 20px;
}

/* Contenedor principal */
form {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    max-width: 1300px;
    margin: 0 auto;
    overflow-x: hidden;
}

h2 {
    color: var(--text-main);
    font-size: 1.8rem;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

/* Estilos de Datos Generales (Fieldset) */
fieldset {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    background-color: #f9fafb;
}

legend {
    font-weight: 600;
    color: var(--primary);
    background: var(--card-bg);
    padding: 5px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

/* Cajas de texto generales */
input[type="text"], 
input[type="number"], 
input[type="date"] {
    padding: 10px 12px;
    border: 1px solid #9ca3af;
    border-radius: 6px;
    font-size: 0.95rem;
    outline: none;
    background-color: #ffffff;
    color: #1f2937;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

input[type="text"]:focus, 
input[type="number"]:focus, 
input[type="date"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* =========================================
   DISEÑO DE TARJETAS PARA LOS SERVICIOS
   ========================================= */
.servicio-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.servicio-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 15px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #475569;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mt-3 { margin-top: 20px; }

/* Textarea para descripción */
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #9ca3af;
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    resize: vertical;
    box-sizing: border-box;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.06);
}

textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* Cuadrícula para la sección financiera */
.finanzas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 15px;
    background: #f8fafc;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

/* Inputs de solo lectura (Cálculos automáticos) */
.readonly-input {
    background-color: #e2e8f0 !important;
    color: #475569 !important;
    border-color: #cbd5e1 !important;
    pointer-events: none;
}

.success-input {
    background-color: #dcfce7 !important;
    color: #166534 !important;
    border-color: #86efac !important;
    font-weight: bold;
    pointer-events: none;
}

/* =========================================
   BOTONES
   ========================================= */
button {
    border-radius: 6px;
    font-weight: 500;
    transition: background-color 0.2s, transform 0.1s;
    cursor: pointer;
}

button:active { transform: scale(0.98); }

.btn-agregar {
    background-color: #f1f5f9;
    color: var(--primary);
    border: 2px dashed var(--primary);
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    margin-top: 10px;
    margin-bottom: 20px;
}

.btn-agregar:hover { background-color: #e0e7ff; }

.btn-danger {
    background-color: var(--danger);
    color: white;
    border: none;
    border-radius: 6px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.btn-danger:hover { background-color: var(--danger-hover); }

.btn-success {
    background-color: var(--success);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    border-radius: 8px;
    width: 100%;
    margin-top: 10px;
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.3);
}

.btn-success:hover { background-color: var(--success-hover); }